ID305B WATERBODY NAME/LOCATION PROBABLE CAUSE OF IMPAIRMENT CYCLE FIRST LISTED USE CLASS WATER QUALITY CATEGORY HUC NO HUC NAME WATERSHED BASIN TMDL PLANNING AREA TMDL PRIORITY WATER TYPE WATER SIZE UNITS MT39F001_010 "THOMPSON CREEK, Wyoming border to mouth (Little Missouri River)" Cadmium 2006 C-3 "5,5N" 10110201 Upper Little Missouri Little Missouri/Belle Fourche Yellowstone Little Missouri Low RIVER 41.22 MILES MT39F001_010 "THOMPSON CREEK, Wyoming border to mouth (Little Missouri River)" Copper 2006 C-3 "5,5N" 10110201 Upper Little Missouri Little Missouri/Belle Fourche Yellowstone Little Missouri Low RIVER 41.22 MILES MT39F001_010 "THOMPSON CREEK, Wyoming border to mouth (Little Missouri River)" Iron 2006 C-3 "5,5N" 10110201 Upper Little Missouri Little Missouri/Belle Fourche Yellowstone Little Missouri Low RIVER 41.22 MILES MT39F001_010 "THOMPSON CREEK, Wyoming border to mouth (Little Missouri River)" Zinc 2006 C-3 "5,5N" 10110201 Upper Little Missouri Little Missouri/Belle Fourche Yellowstone Little Missouri Low RIVER 41.22 MILES MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" Cadmium 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Yellowstone Little Missouri Low RIVER 106.1 MILES MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" Copper 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Yellowstone Little Missouri Low RIVER 106.1 MILES MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" Iron 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Yellowstone Little Missouri Low RIVER 106.1 MILES MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" Lead 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Yellowstone Little Missouri Low RIVER 106.1 MILES MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" "Nitrogen, Total" 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Yellowstone Little Missouri Low RIVER 106.1 MILES MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" "Phosphorus, Total" 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Yellowstone Little Missouri Low RIVER 106.1 MILES MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" Zinc 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Yellowstone Little Missouri Low RIVER 106.1 MILES MT40A001_010 "MUSSELSHELL RIVER, North & South Fork confluence to Deadmans Basin Diversion Canal" Escherichia coli (E. Coli) 2018 B-2 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell High RIVER 55.3 MILES MT40A001_010 "MUSSELSHELL RIVER, North & South Fork confluence to Deadmans Basin Diversion Canal" Iron 2018 B-2 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 55.3 MILES MT40A001_020 "MUSSELSHELL RIVER, Deadmans Basin Supply Canal to HUC boundary near Roundup" Escherichia coli (E. Coli) 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell High RIVER 94.49 MILES MT40A001_020 "MUSSELSHELL RIVER, Deadmans Basin Supply Canal to HUC boundary near Roundup" Iron 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 94.49 MILES MT40A001_020 "MUSSELSHELL RIVER, Deadmans Basin Supply Canal to HUC boundary near Roundup" Lead 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 94.49 MILES MT40A001_020 "MUSSELSHELL RIVER, Deadmans Basin Supply Canal to HUC boundary near Roundup" Sediment 1998 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 94.49 MILES MT40A002_012 "NORTH FORK MUSSELSHELL RIVER, Bair Reservoir to confluence with South Fork Musselshell River" Escherichia coli (E. Coli) 2018 B-1 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell High RIVER 24.31 MILES MT40A002_012 "NORTH FORK MUSSELSHELL RIVER, Bair Reservoir to confluence with South Fork Musselshell River" Iron 2018 B-1 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 24.31 MILES MT40A002_012 "NORTH FORK MUSSELSHELL RIVER, Bair Reservoir to confluence with South Fork Musselshell River" "Phosphorus, Total" 2018 B-1 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 24.31 MILES MT40A002_030 "TRAIL CREEK, headwaters to mouth (North Fork Musselshell River)" "Phosphorus, Total" 2018 B-1 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 10.1 MILES MT40A002_030 "TRAIL CREEK, headwaters to mouth (North Fork Musselshell River)" Sediment 2006 B-1 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 10.1 MILES MT40A002_040 "MILL CREEK, headwaters to mouth (North Fork Musselshell River)" Sediment 1992 B-1 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 4.81 MILES MT40A002_050 "CARELESS CREEK, confluence with Swimming Woman Creek to mouth (Musselshell River)" Iron 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Careless Creek Low RIVER 20.8 MILES MT40A002_070 "FISH CREEK, headwaters to mouth (Musselshell River)" Escherichia coli (E. Coli) 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell High RIVER 98.64 MILES MT40A002_070 "FISH CREEK, headwaters to mouth (Musselshell River)" Iron 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 98.64 MILES MT40A002_070 "FISH CREEK, headwaters to mouth (Musselshell River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 98.64 MILES MT40A002_080 "PAINTED ROBE CREEK, headwaters to mouth (Musselshell River)" "Nitrogen, Total" 1994 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 40.92 MILES MT40A002_080 "PAINTED ROBE CREEK, headwaters to mouth (Musselshell River)" Salinity 1994 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 40.92 MILES MT40A002_080 "PAINTED ROBE CREEK, headwaters to mouth (Musselshell River)" Sulfate 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 40.92 MILES MT40A002_090 "HALF BREED CREEK, headwaters to mouth (Musselshell River)" Escherichia coli (E. Coli) 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell High RIVER 18.19 MILES MT40A002_090 "HALF BREED CREEK, headwaters to mouth (Musselshell River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1992 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 18.19 MILES MT40A002_110 "MILLER CREEK, confluence of East and West Forks Miller Creek to mouth (Little Elk Creek)" Sediment 2018 B-1 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 12.04 MILES MT40A002_120 "AMERICAN FORK, confluence of Middle and North Forks American Fork to mouth (Musselshell River)" Escherichia coli (E. Coli) 2018 B-1 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell High RIVER 39.42 MILES MT40A002_130 "BIG COULEE CREEK, confluence of North and South Forks Big Coulee Creek to mouth (Musselshell River)" Escherichia coli (E. Coli) 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell High RIVER 59.52 MILES MT40A002_130 "BIG COULEE CREEK, confluence of North and South Forks Big Coulee Creek to mouth (Musselshell River)" Iron 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 59.52 MILES MT40A002_130 "BIG COULEE CREEK, confluence of North and South Forks Big Coulee Creek to mouth (Musselshell River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 59.52 MILES MT40A002_130 "BIG COULEE CREEK, confluence of North and South Forks Big Coulee Creek to mouth (Musselshell River)" "Nitrogen, Total" 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 59.52 MILES MT40A002_130 "BIG COULEE CREEK, confluence of North and South Forks Big Coulee Creek to mouth (Musselshell River)" Selenium 2018 C-3 5 10040201 Upper Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 59.52 MILES MT40B001_021 "FLATWILLOW CREEK, headwaters to Highway 87 bridge" Iron 2018 B-2 5 10040203 Flatwillow Musselshell Lower Missouri Flatwillow - Box Elder Low RIVER 40.11 MILES MT40B001_021 "FLATWILLOW CREEK, headwaters to Highway 87 bridge" Sediment 2000 B-2 5 10040203 Flatwillow Musselshell Lower Missouri Flatwillow - Box Elder Low RIVER 40.11 MILES MT40B001_022 "FLATWILLOW CREEK, Highway 87 bridge to mouth (Musselshell River)" Iron 2018 C-3 5 10040203 Flatwillow Musselshell Lower Missouri Flatwillow - Box Elder Low RIVER 99.88 MILES MT40B001_022 "FLATWILLOW CREEK, Highway 87 bridge to mouth (Musselshell River)" Selenium 2018 C-3 5 10040203 Flatwillow Musselshell Lower Missouri Flatwillow - Box Elder Low RIVER 99.88 MILES MT40B001_040 "NORTH FORK FLATWILLOW CREEK, headwaters to confluence with South Fork" Sediment 2002 B-2 5 10040203 Flatwillow Musselshell Lower Missouri Flatwillow - Box Elder Low RIVER 27.56 MILES MT40B002_001 "BOX ELDER CREEK, headwaters to mouth" Iron 2018 C-3 5 10040204 Box Elder Musselshell Lower Missouri Flatwillow - Box Elder Low RIVER 139.16 MILES MT40B002_010 "McDONALD CREEK, North and South Forks to mouth (Box Elder Creek)" Escherichia coli (E. Coli) 2018 C-3 5 10040204 Box Elder Musselshell Lower Missouri Flatwillow - Box Elder High RIVER 89.18 MILES MT40B002_010 "McDONALD CREEK, North and South Forks to mouth (Box Elder Creek)" Iron 2018 C-3 5 10040204 Box Elder Musselshell Lower Missouri Flatwillow - Box Elder Low RIVER 89.18 MILES MT40B002_010 "McDONALD CREEK, North and South Forks to mouth (Box Elder Creek)" Salinity 2018 C-3 5 10040204 Box Elder Musselshell Lower Missouri Flatwillow - Box Elder Low RIVER 89.18 MILES MT40B002_021 "FORDS CREEK, East Fork Fords Creek to mouth (Box Elder Creek)" Escherichia coli (E. Coli) 2018 C-3 5 10040204 Box Elder Musselshell Lower Missouri Flatwillow - Box Elder High RIVER 69.84 MILES MT40B002_021 "FORDS CREEK, East Fork Fords Creek to mouth (Box Elder Creek)" Iron 2018 C-3 5 10040204 Box Elder Musselshell Lower Missouri Flatwillow - Box Elder Low RIVER 69.84 MILES MT40B002_070 "SOUTH FORK McDONALD CREEK, headwaters to confluence with North Fork McDonald Creek" Escherichia coli (E. Coli) 2018 C-3 5 10040204 Box Elder Musselshell Lower Missouri Flatwillow - Box Elder High RIVER 50.29 MILES MT40B002_070 "SOUTH FORK McDONALD CREEK, headwaters to confluence with North Fork McDonald Creek" Iron 2018 C-3 5 10040204 Box Elder Musselshell Lower Missouri Flatwillow - Box Elder Low RIVER 50.29 MILES MT40C001_010 "MUSSELSHELL RIVER, HUC boundary near Roundup to Flatwillow Creek" Iron 2018 C-3 5 10040202 Middle Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 114.6 MILES MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" Iron 2006 C-3 5 10040202 Middle Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 117.27 MILES MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" "Nitrogen, Total" 2006 C-3 5 10040202 Middle Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 117.27 MILES MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" "Phosphorus, Total" 2006 C-3 5 10040202 Middle Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 117.27 MILES MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" Salinity 2018 C-3 5 10040202 Middle Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 117.27 MILES MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" Sedimentation/Siltation 1994 C-3 5 10040202 Middle Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 117.27 MILES MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" Sulfate 2006 C-3 5 10040202 Middle Musselshell Musselshell Lower Missouri Upper - Middle Musselshell Low RIVER 117.27 MILES MT40C003_010 "MUSSELSHELL RIVER, Flatwillow Creek to Fort Peck Reservoir" Escherichia coli (E. Coli) 2018 C-3 5 10040205 Lower Musselshell Musselshell Lower Missouri Lower Musselshell High RIVER 75.94 MILES MT40C003_010 "MUSSELSHELL RIVER, Flatwillow Creek to Fort Peck Reservoir" Iron 2018 C-3 5 10040205 Lower Musselshell Musselshell Lower Missouri Lower Musselshell Low RIVER 75.94 MILES MT40D001_010 "BIG DRY CREEK, Steves Fork to mouth (Fort Peck Reservoir)" "Ammonia, Un-ionized" 2000 C-3 5 10040105 Big Dry Fort Peck Lake Lower Missouri Big and Little Dry Low RIVER 98.62 MILES MT40D001_010 "BIG DRY CREEK, Steves Fork to mouth (Fort Peck Reservoir)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1994 C-3 5 10040105 Big Dry Fort Peck Lake Lower Missouri Big and Little Dry Low RIVER 98.62 MILES MT40D001_010 "BIG DRY CREEK, Steves Fork to mouth (Fort Peck Reservoir)" "Nitrogen, Total" 1994 C-3 5 10040105 Big Dry Fort Peck Lake Lower Missouri Big and Little Dry Low RIVER 98.62 MILES MT40D001_010 "BIG DRY CREEK, Steves Fork to mouth (Fort Peck Reservoir)" "Phosphorus, Total" 1994 C-3 5 10040105 Big Dry Fort Peck Lake Lower Missouri Big and Little Dry Low RIVER 98.62 MILES MT40E001_010 "MISSOURI RIVER, Bullwhacker Creek to Fort Peck Reservoir" Arsenic 1990 B-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Missouri River Low RIVER 49.02 MILES MT40E001_010 "MISSOURI RIVER, Bullwhacker Creek to Fort Peck Reservoir" Copper 2000 B-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Missouri River Low RIVER 49.02 MILES MT40E002_070 "RUBY GULCH, headwaters to confluence of Alder Gulch, T25N R25E S21" Arsenic 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Landusky Low RIVER 2.91 MILES MT40E002_090 "ROCK CREEK, headwaters to mouth (Missouri River)" Escherichia coli (E. Coli) 2000 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Landusky Low RIVER 39.19 MILES MT40E002_100 "MILL GULCH, headwaters to mouth (Rock Creek)" Arsenic 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Landusky Low RIVER 1.74 MILES MT40E002_100 "MILL GULCH, headwaters to mouth (Rock Creek)" Cadmium 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Landusky Low RIVER 1.74 MILES MT40E002_100 "MILL GULCH, headwaters to mouth (Rock Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Landusky Low RIVER 1.74 MILES MT40E002_100 "MILL GULCH, headwaters to mouth (Rock Creek)" Zinc 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Landusky Low RIVER 1.74 MILES MT40E002_110 "SULLIVAN CREEK, headwaters to mouth (Rock Creek)" Nickel 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Landusky Low RIVER 0.85 MILES MT40E003_020 "NELSON CREEK, headwaters to mouth (Big Dry Creek arm of Fort Peck Res)" Cadmium 2006 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Redwater Low RIVER 36.37 MILES MT40E003_020 "NELSON CREEK, headwaters to mouth (Big Dry Creek arm of Fort Peck Res)" Copper 2006 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Redwater Low RIVER 36.37 MILES MT40E004_010 FORT PECK RESERVOIR Lead 2000 B-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Missouri River Low FRESHWATER LAKE "233,295.80" ACRES MT40E004_010 FORT PECK RESERVOIR Mercury 2000 B-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Lower Missouri Missouri River Low FRESHWATER LAKE "233,295.80" ACRES MT40F003_010 "MILK RIVER, Canada border to Fresno Reservoir" Copper 2006 B-3 5 10050002 Upper Milk Milk Lower Missouri Upper Milk Low RIVER 39.66 MILES MT40F003_010 "MILK RIVER, Canada border to Fresno Reservoir" Iron 2006 B-3 5 10050002 Upper Milk Milk Lower Missouri Upper Milk Low RIVER 39.66 MILES MT40F003_010 "MILK RIVER, Canada border to Fresno Reservoir" Lead 2006 B-3 5 10050002 Upper Milk Milk Lower Missouri Upper Milk Low RIVER 39.66 MILES MT40H001_010 "BIG SANDY CREEK, Lonesome Lake Coulee to mouth (Milk River)" Mercury 2002 B-3 5 10050005 Big Sandy Milk Lower Missouri Big Sandy - Sage Low RIVER 62.93 MILES MT40I001_020 "PEOPLES CREEK, headwaters to Fort Belknap Reservation boundary" Mercury 2006 B-1 5 10050009 Peoples Milk Lower Missouri Middle Milk and Tributaries Low RIVER 57.19 MILES MT40I001_020 "PEOPLES CREEK, headwaters to Fort Belknap Reservation boundary" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10050009 Peoples Milk Lower Missouri Middle Milk and Tributaries Low RIVER 57.19 MILES MT40I001_020 "PEOPLES CREEK, headwaters to Fort Belknap Reservation boundary" "Phosphorus, Total" 2006 B-1 5 10050009 Peoples Milk Lower Missouri Middle Milk and Tributaries Low RIVER 57.19 MILES MT40I001_020 "PEOPLES CREEK, headwaters to Fort Belknap Reservation boundary" Temperature 1988 B-1 5 10050009 Peoples Milk Lower Missouri Middle Milk and Tributaries Low RIVER 57.19 MILES MT40I001_040 "KING CREEK, headwaters to Fort Belknap Reservation boundary" Lead 2014 B-1 5 10050009 Peoples Milk Lower Missouri Landusky Low RIVER 0.9 MILES MT40J001_011 "MILK RIVER, Fresno Dam to Thirtymile Creek" Mercury 2000 B-3 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 113.28 MILES MT40J001_012 "MILK RIVER, Thirtymile Creek to Dodson Creek" Mercury 2000 B-3 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 58.19 MILES MT40J001_013 "MILK RIVER, Dodson Creek to Whitewater Creek" Mercury 2000 B-3 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 102.75 MILES MT40J001_020 "MILK RIVER, Whitewater Creek to Beaver Creek" Iron 2000 B-3 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 38.24 MILES MT40J001_020 "MILK RIVER, Whitewater Creek to Beaver Creek" Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-3 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 38.24 MILES MT40J002_010 "BEAVER CREEK, Beaver Creek Reservoir to mouth (Milk River)" Iron 2006 B-1 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 24.92 MILES MT40J002_010 "BEAVER CREEK, Beaver Creek Reservoir to mouth (Milk River)" Lead 2006 B-1 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 24.92 MILES MT40J002_010 "BEAVER CREEK, Beaver Creek Reservoir to mouth (Milk River)" Mercury 2006 B-1 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 24.92 MILES MT40J002_010 "BEAVER CREEK, Beaver Creek Reservoir to mouth (Milk River)" Sedimentation/Siltation 1988 B-1 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 24.92 MILES MT40J002_010 "BEAVER CREEK, Beaver Creek Reservoir to mouth (Milk River)" Temperature 1988 B-1 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 24.92 MILES MT40J002_020 "BULLHOOK CREEK, headwaters to the Bullhook Dam, T32N R16E S16" Nitrate/Nitrite (Nitrite + Nitrate as N) 1988 B-3 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 24.9 MILES MT40J002_020 "BULLHOOK CREEK, headwaters to the Bullhook Dam, T32N R16E S16" Sedimentation/Siltation 1988 B-3 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 24.9 MILES MT40J002_020 "BULLHOOK CREEK, headwaters to the Bullhook Dam, T32N R16E S16" Temperature 1988 B-3 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 24.9 MILES MT40J002_030 "LITTLE BOXELDER CREEK, headwaters to mouth (Milk River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1988 B-1 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 50.17 MILES MT40J002_030 "LITTLE BOXELDER CREEK, headwaters to mouth (Milk River)" "Nitrogen, Total" 1988 B-1 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 50.17 MILES MT40J002_030 "LITTLE BOXELDER CREEK, headwaters to mouth (Milk River)" "Phosphorus, Total" 1988 B-1 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 50.17 MILES MT40J002_030 "LITTLE BOXELDER CREEK, headwaters to mouth (Milk River)" Sedimentation/Siltation 1988 B-1 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 50.17 MILES MT40J002_030 "LITTLE BOXELDER CREEK, headwaters to mouth (Milk River)" Temperature 1988 B-1 5 10050004 Middle Milk Milk Lower Missouri Middle Milk and Tributaries Low RIVER 50.17 MILES MT40J003_010 "LODGE CREEK, Canadian border to mouth (Milk River)" Dissolved Oxygen 1992 B-3 5 10050007 Lodge Milk Lower Missouri Middle Milk and Tributaries Low RIVER 83.08 MILES MT40J003_010 "LODGE CREEK, Canadian border to mouth (Milk River)" Mercury 2006 B-3 5 10050007 Lodge Milk Lower Missouri Middle Milk and Tributaries Low RIVER 83.08 MILES MT40J003_010 "LODGE CREEK, Canadian border to mouth (Milk River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1992 B-3 5 10050007 Lodge Milk Lower Missouri Middle Milk and Tributaries Low RIVER 83.08 MILES MT40J003_010 "LODGE CREEK, Canadian border to mouth (Milk River)" "Nitrogen, Total" 1992 B-3 5 10050007 Lodge Milk Lower Missouri Middle Milk and Tributaries Low RIVER 83.08 MILES MT40J003_010 "LODGE CREEK, Canadian border to mouth (Milk River)" "Phosphorus, Total" 1992 B-3 5 10050007 Lodge Milk Lower Missouri Middle Milk and Tributaries Low RIVER 83.08 MILES MT40J004_010 "BATTLE CREEK, Canadian border to mouth (Milk River)" Sedimentation/Siltation 2000 B-3 5 10050008 Battle Milk Lower Missouri Middle Milk and Tributaries Low RIVER 74.33 MILES MT40J005_020 "COTTONWOOD CREEK, Black Coulee to mouth (Milk River)" Iron 2006 B-3 "5,5N" 10050010 Cottonwood Milk Lower Missouri Middle Milk and Tributaries Low RIVER 57.36 MILES MT40J005_020 "COTTONWOOD CREEK, Black Coulee to mouth (Milk River)" Sedimentation/Siltation 1990 B-3 "5,5N" 10050010 Cottonwood Milk Lower Missouri Middle Milk and Tributaries Low RIVER 57.36 MILES MT40K001_010 "WHITEWATER CREEK, Canadian border to mouth (Milk River)" Mercury 2006 B-3 5 10050011 Whitewater Milk Lower Missouri Middle Milk and Tributaries Low RIVER 67.63 MILES MT40M001_013 "BEAVER CREEK, Fort Belknap Reservation boundary to Big Warm Creek" Mercury 2006 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 55.12 MILES MT40M001_013 "BEAVER CREEK, Fort Belknap Reservation boundary to Big Warm Creek" "Phosphorus, Total" 2006 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 55.12 MILES MT40M001_014 "BEAVER CREEK, Big Warm Creek to Un-Named tributary, T30N R32E S32" Mercury 2006 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 97.99 MILES MT40M001_014 "BEAVER CREEK, Big Warm Creek to Un-Named tributary, T30N R32E S32" "Phosphorus, Total" 2006 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 97.99 MILES MT40M001_020 "BEAVER CREEK, Un-named tributary at T30N R32E S32 to mouth (Milk River)" "Nitrogen, Total" 1990 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 86.86 MILES MT40M001_020 "BEAVER CREEK, Un-named tributary at T30N R32E S32 to mouth (Milk River)" "Phosphorus, Total" 1990 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 86.86 MILES MT40M001_020 "BEAVER CREEK, Un-named tributary at T30N R32E S32 to mouth (Milk River)" Uranium 2000 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 86.86 MILES MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" Arsenic 2006 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 36.88 MILES MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" Cadmium 2006 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 36.88 MILES MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" Copper 2006 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 36.88 MILES MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" Dissolved Oxygen 2006 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 36.88 MILES MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" Iron 2006 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 36.88 MILES MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" Lead 2006 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 36.88 MILES MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" Nitrate/Nitrite (Nitrite + Nitrate as N) 1996 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 36.88 MILES MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" "Nitrogen, Total" 1996 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 36.88 MILES MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" "Phosphorus, Total" 1996 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 36.88 MILES MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" Sediment 1996 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 36.88 MILES MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" Zinc 2006 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 36.88 MILES MT40M002_020 "LARB CREEK, headwaters to mouth (Beaver Creek)" Copper 2006 B-3 "5,5N" 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 76.67 MILES MT40M002_020 "LARB CREEK, headwaters to mouth (Beaver Creek)" Dissolved Oxygen 2006 B-3 "5,5N" 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 76.67 MILES MT40M002_020 "LARB CREEK, headwaters to mouth (Beaver Creek)" Lead 2006 B-3 "5,5N" 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 76.67 MILES MT40M002_020 "LARB CREEK, headwaters to mouth (Beaver Creek)" "Nitrogen, Total" 2006 B-3 "5,5N" 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 76.67 MILES MT40M002_020 "LARB CREEK, headwaters to mouth (Beaver Creek)" "Phosphorus, Total" 2006 B-3 "5,5N" 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 76.67 MILES MT40M002_030 "BIG WARM CREEK, Fort Belknap Reservation boundary to mouth (Beaver Creek)" "Phosphorus, Total" 1996 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 57.08 MILES MT40M002_030 "BIG WARM CREEK, Fort Belknap Reservation boundary to mouth (Beaver Creek)" Salinity 2000 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 57.08 MILES MT40M002_030 "BIG WARM CREEK, Fort Belknap Reservation boundary to mouth (Beaver Creek)" Sedimentation/Siltation 2000 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low RIVER 57.08 MILES MT40M003_010 LAKE BOWDOIN Salinity 1990 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low FRESHWATER LAKE "3,932.20" ACRES MT40M003_010 LAKE BOWDOIN Selenium 2000 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low FRESHWATER LAKE "3,932.20" ACRES MT40M003_020 NELSON RESERVOIR "Phosphorus, Total" 1990 B-3 5 10050014 Beaver Milk Lower Missouri Beaver Low FRESHWATER LAKE "4,112.50" ACRES MT40O001_010 "MILK RIVER, Beaver Creek to mouth (Missouri River)" Escherichia coli (E. Coli) 2000 B-3 5 10050012 Lower Milk Milk Lower Missouri Lower Milk Low RIVER 134.52 MILES MT40O001_010 "MILK RIVER, Beaver Creek to mouth (Missouri River)" Lead 2000 B-3 5 10050012 Lower Milk Milk Lower Missouri Lower Milk Low RIVER 134.52 MILES MT40O001_010 "MILK RIVER, Beaver Creek to mouth (Missouri River)" Mercury 2000 B-3 5 10050012 Lower Milk Milk Lower Missouri Lower Milk Low RIVER 134.52 MILES MT40O002_020 "BUGGY CREEK, headwaters to mouth (Milk River)" Iron 2006 B-3 5 10050012 Lower Milk Milk Lower Missouri Lower Milk Low RIVER 46.53 MILES MT40O002_031 "WILLOW CREEK, headwaters to Halfpint Reservoir, T25N R35E S26" Sedimentation/Siltation 1992 B-3 5 10050012 Lower Milk Milk Lower Missouri Lower Milk Low RIVER 10.38 MILES MT40O002_033 "WILLOW CREEK, Halfpint Reservoir to mouth (Milk River), T28N R40E S29" Sedimentation/Siltation 1992 B-3 5 10050012 Lower Milk Milk Lower Missouri Lower Milk Low RIVER 76.13 MILES MT40O002_040 "BEAVER CREEK, confluence of Little Beaver Creek and South Fork Beaver Creek to mouth (Willow Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-3 5 10050012 Lower Milk Milk Lower Missouri Lower Milk Low RIVER 16.53 MILES MT40O002_040 "BEAVER CREEK, confluence of Little Beaver Creek and South Fork Beaver Creek to mouth (Willow Creek)" Sediment 1996 B-3 5 10050012 Lower Milk Milk Lower Missouri Lower Milk Low RIVER 16.53 MILES MT40O003_010 "PORCUPINE CREEK, confluence of West and Middle Forks to mouth (Milk River)" "Nitrogen, Total" 1996 B-3 5 10050016 Porcupine Milk Lower Missouri Lower Milk Low RIVER 49.29 MILES MT40O003_010 "PORCUPINE CREEK, confluence of West and Middle Forks to mouth (Milk River)" "Phosphorus, Total" 1996 B-3 5 10050016 Porcupine Milk Lower Missouri Lower Milk Low RIVER 49.29 MILES MT40O003_010 "PORCUPINE CREEK, confluence of West and Middle Forks to mouth (Milk River)" Salinity 2000 B-3 5 10050016 Porcupine Milk Lower Missouri Lower Milk Low RIVER 49.29 MILES MT40P002_010 "EAST REDWATER CREEK, headwaters to mouth (Redwater River)" Sedimentation/Siltation 1992 C-3 5 10060002 Redwater Missouri-Poplar Lower Missouri Redwater Low RIVER 50.61 MILES MT40Q001_011 "POPLAR RIVER, Confluence of East & Middle Forks to Fort Peck Reservation boundary, T33N R48E S12" Escherichia coli (E. Coli) 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 29.94 MILES MT40Q001_011 "POPLAR RIVER, Confluence of East & Middle Forks to Fort Peck Reservation boundary, T33N R48E S12" Sedimentation/Siltation 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 29.94 MILES MT40Q001_011 "POPLAR RIVER, Confluence of East & Middle Forks to Fort Peck Reservation boundary, T33N R48E S12" Temperature 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 29.94 MILES MT40Q001_012 "MIDDLE FORK POPLAR RIVER, headwater (confluence of Lost Child & Goose Creeks) to the mouth (Poplar River)" Escherichia coli (E. Coli) 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 36.46 MILES MT40Q001_012 "MIDDLE FORK POPLAR RIVER, headwater (confluence of Lost Child & Goose Creeks) to the mouth (Poplar River)" Sedimentation/Siltation 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 36.46 MILES MT40Q001_012 "MIDDLE FORK POPLAR RIVER, headwater (confluence of Lost Child & Goose Creeks) to the mouth (Poplar River)" Temperature 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 36.46 MILES MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" Iron 2006 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 41.95 MILES MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 41.95 MILES MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" "Nitrogen, Total" 2006 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 41.95 MILES MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" "Phosphorus, Total" 2006 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 41.95 MILES MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" Sodium 1988 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 41.95 MILES MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" Specific Conductivity 1990 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 41.95 MILES MT40Q002_020 "EAST FORK POPLAR RIVER, Canada border to mouth (Poplar River)" Iron 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 21.58 MILES MT40R001_010 "BIG MUDDY CREEK, north corner of Fort Peck Reservation boundary to mouth (Missouri River)" "Nitrogen, Total" 1990 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 82.08 MILES MT40R001_010 "BIG MUDDY CREEK, north corner of Fort Peck Reservation boundary to mouth (Missouri River)" "Phosphorus, Total" 1990 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 82.08 MILES MT40R001_010 "BIG MUDDY CREEK, north corner of Fort Peck Reservation boundary to mouth (Missouri River)" Sedimentation/Siltation 1990 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 82.08 MILES MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" Copper 2002 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 119.54 MILES MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" Lead 2002 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 119.54 MILES MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" Mercury 2002 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 119.54 MILES MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" "Nitrogen, Total" 1996 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 119.54 MILES MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" Organic Enrichment 2000 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 119.54 MILES MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" "Phosphorus, Total" 1996 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 119.54 MILES MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" Zinc 2002 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 119.54 MILES MT40R003_010 MEDICINE LAKE Cadmium 2006 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low FRESHWATER LAKE "9,726.10" ACRES MT40R003_010 MEDICINE LAKE Lead 2006 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low FRESHWATER LAKE "9,726.10" ACRES MT40R003_010 MEDICINE LAKE Mercury 2006 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Lower Missouri Low FRESHWATER LAKE "9,726.10" ACRES MT40S001_011 "MISSOURI RIVER, Fort Peck Dam to Milk River" Temperature 2002 B-2 5 10060001 Prairie Elk-Wolf Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 9.79 MILES MT40S001_012 "MISSOURI RIVER, Milk River to Poplar River" Temperature 2002 B-3 5 10060001 Prairie Elk-Wolf Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 81.86 MILES MT40S002_030 "SAND CREEK, confluence of East and West Forks to mouth (Missouri River)" Sedimentation/Siltation 1990 C-3 5 10060001 Prairie Elk-Wolf Missouri-Poplar Lower Missouri Redwater Low RIVER 19.82 MILES MT40S003_010 "MISSOURI RIVER, Poplar River to North Dakota border" Temperature 2000 B-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 91.97 MILES MT40S004_010 "CHARLIE CREEK, East and Middle Charlie Creek to mouth (Missouri River)" Iron 2006 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 32.86 MILES MT40S004_010 "CHARLIE CREEK, East and Middle Charlie Creek to mouth (Missouri River)" "Nitrogen, Total" 2006 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 32.86 MILES MT40S004_010 "CHARLIE CREEK, East and Middle Charlie Creek to mouth (Missouri River)" Specific Conductivity 1988 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 32.86 MILES MT40S004_020 "HARDSCRABBLE CREEK, headwaters to mouth (Missouri River)" "Nitrogen, Total" 2006 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 35.91 MILES MT40S004_020 "HARDSCRABBLE CREEK, headwaters to mouth (Missouri River)" Specific Conductivity 1992 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 35.91 MILES MT40S004_020 "HARDSCRABBLE CREEK, headwaters to mouth (Missouri River)" Total Dissolved Solids (TDS) 1992 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Lower Missouri Low RIVER 35.91 MILES MT41A001_010 "RED ROCK RIVER, Lima Dam to Clark Canyon Reservoir" "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 51.81 MILES MT41A001_010 "RED ROCK RIVER, Lima Dam to Clark Canyon Reservoir" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 51.81 MILES MT41A001_010 "RED ROCK RIVER, Lima Dam to Clark Canyon Reservoir" Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 51.81 MILES MT41A001_010 "RED ROCK RIVER, Lima Dam to Clark Canyon Reservoir" Temperature 2006 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 51.81 MILES MT41A001_020 "RED ROCK RIVER, Lower Red Rock Lake to Lima Dam" Escherichia coli (E. Coli) 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 43.82 MILES MT41A001_020 "RED ROCK RIVER, Lower Red Rock Lake to Lima Dam" "Nitrogen, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 43.82 MILES MT41A001_020 "RED ROCK RIVER, Lower Red Rock Lake to Lima Dam" "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 43.82 MILES MT41A001_020 "RED ROCK RIVER, Lower Red Rock Lake to Lima Dam" Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 43.82 MILES MT41A001_020 "RED ROCK RIVER, Lower Red Rock Lake to Lima Dam" Temperature 1992 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 43.82 MILES MT41A003_010 "MEDICINE LODGE CREEK, headwaters to mouth (Horse Prairie Creek)" Escherichia coli (E. Coli) 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 34.64 MILES MT41A003_010 "MEDICINE LODGE CREEK, headwaters to mouth (Horse Prairie Creek)" Iron 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 34.64 MILES MT41A003_010 "MEDICINE LODGE CREEK, headwaters to mouth (Horse Prairie Creek)" "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 34.64 MILES MT41A003_010 "MEDICINE LODGE CREEK, headwaters to mouth (Horse Prairie Creek)" "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 34.64 MILES MT41A003_010 "MEDICINE LODGE CREEK, headwaters to mouth (Horse Prairie Creek)" Sedimentation/Siltation 2006 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 34.64 MILES MT41A003_010 "MEDICINE LODGE CREEK, headwaters to mouth (Horse Prairie Creek)" Temperature 2006 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 34.64 MILES MT41A003_020 "MUDDY CREEK, confluence of Sourdough and Wilson Creek to mouth (Big Sheep Creek), T14S R10W S10" Arsenic 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 11.08 MILES MT41A003_020 "MUDDY CREEK, confluence of Sourdough and Wilson Creek to mouth (Big Sheep Creek), T14S R10W S10" Iron 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 11.08 MILES MT41A003_020 "MUDDY CREEK, confluence of Sourdough and Wilson Creek to mouth (Big Sheep Creek), T14S R10W S10" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 11.08 MILES MT41A003_020 "MUDDY CREEK, confluence of Sourdough and Wilson Creek to mouth (Big Sheep Creek), T14S R10W S10" Sedimentation/Siltation 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 11.08 MILES MT41A003_030 "CABIN CREEK, headwaters to mouth (Big Sheep Creek)" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 17.15 MILES MT41A003_040 "NICHOLIA CREEK, headwaters to mouth (Big Sheep Creek)" Aluminum 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 19.14 MILES MT41A003_040 "NICHOLIA CREEK, headwaters to mouth (Big Sheep Creek)" "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 19.14 MILES MT41A003_040 "NICHOLIA CREEK, headwaters to mouth (Big Sheep Creek)" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 19.14 MILES MT41A003_080 "TRAIL CREEK, headwaters to mouth (Horse Prairie Creek)" Aluminum 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 15.62 MILES MT41A003_080 "TRAIL CREEK, headwaters to mouth (Horse Prairie Creek)" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 15.62 MILES MT41A003_080 "TRAIL CREEK, headwaters to mouth (Horse Prairie Creek)" Sedimentation/Siltation 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 15.62 MILES MT41A003_090 "HORSE PRAIRIE CREEK, headwaters to mouth (Clark Canyon Res)" Escherichia coli (E. Coli) 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 46.67 MILES MT41A003_090 "HORSE PRAIRIE CREEK, headwaters to mouth (Clark Canyon Res)" Mercury 2000 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 46.67 MILES MT41A003_090 "HORSE PRAIRIE CREEK, headwaters to mouth (Clark Canyon Res)" "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 46.67 MILES MT41A003_090 "HORSE PRAIRIE CREEK, headwaters to mouth (Clark Canyon Res)" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 46.67 MILES MT41A003_090 "HORSE PRAIRIE CREEK, headwaters to mouth (Clark Canyon Res)" Sedimentation/Siltation 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 46.67 MILES MT41A003_100 "BLOODY DICK CREEK, headwaters to mouth (Horse Prairie Creek)" Aluminum 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 30.32 MILES MT41A003_100 "BLOODY DICK CREEK, headwaters to mouth (Horse Prairie Creek)" Lead 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 30.32 MILES MT41A003_100 "BLOODY DICK CREEK, headwaters to mouth (Horse Prairie Creek)" "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 30.32 MILES MT41A003_110 "SELWAY CREEK, headwaters to mouth (Bloody Dick Creek)" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 9.12 MILES MT41A003_110 "SELWAY CREEK, headwaters to mouth (Bloody Dick Creek)" Sedimentation/Siltation 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 9.12 MILES MT41A003_140 "SAGE CREEK, headwaters to mouth (Red Rock River)" "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 40.1 MILES MT41A003_140 "SAGE CREEK, headwaters to mouth (Red Rock River)" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 40.1 MILES MT41A003_140 "SAGE CREEK, headwaters to mouth (Red Rock River)" Sedimentation/Siltation 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 40.1 MILES MT41A003_150 "BIG SHEEP CREEK, headwaters to mouth (Red Rock River)" "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 21.78 MILES MT41A003_150 "BIG SHEEP CREEK, headwaters to mouth (Red Rock River)" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 21.78 MILES MT41A003_150 "BIG SHEEP CREEK, headwaters to mouth (Red Rock River)" Sedimentation/Siltation 2006 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 21.78 MILES MT41A003_160 "LITTLE SHEEP CREEK, headwaters to mouth (Red Rock River)" Iron 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 17.46 MILES MT41A003_160 "LITTLE SHEEP CREEK, headwaters to mouth (Red Rock River)" "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 17.46 MILES MT41A003_160 "LITTLE SHEEP CREEK, headwaters to mouth (Red Rock River)" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 17.46 MILES MT41A004_010 "PRICE CREEK, headwaters to mouth (Red Rock River)" Arsenic 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 10.52 MILES MT41A004_010 "PRICE CREEK, headwaters to mouth (Red Rock River)" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 10.52 MILES MT41A004_010 "PRICE CREEK, headwaters to mouth (Red Rock River)" Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 10.52 MILES MT41A004_020 "METZEL CREEK, headwaters to mouth (Red Rock River)" Arsenic 2020 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 13.59 MILES MT41A004_020 "METZEL CREEK, headwaters to mouth (Red Rock River)" "Phosphorus, Total" 2020 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 13.59 MILES MT41A004_030 "FISH CREEK, headwaters to mouth (Metzel Creek)" Aluminum 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 7.88 MILES MT41A004_030 "FISH CREEK, headwaters to mouth (Metzel Creek)" "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 7.88 MILES MT41A004_030 "FISH CREEK, headwaters to mouth (Metzel Creek)" "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 7.88 MILES MT41A004_030 "FISH CREEK, headwaters to mouth (Metzel Creek)" Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 7.88 MILES MT41A004_040 "CORRAL CREEK, headwaters to mouth (Red Rock Creek)" "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 4.29 MILES MT41A004_040 "CORRAL CREEK, headwaters to mouth (Red Rock Creek)" Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 4.29 MILES MT41A004_050 "EAST FORK CLOVER CREEK, headwaters to mouth (Clover Creek)" "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 5.78 MILES MT41A004_050 "EAST FORK CLOVER CREEK, headwaters to mouth (Clover Creek)" Sedimentation/Siltation 1992 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 5.78 MILES MT41A004_070 "LONG CREEK, headwaters to mouth (Red Rock River)" Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 23.94 MILES MT41A004_080 "O'DELL CREEK, headwaters to mouth (Lower Red Rock Lake)" Sedimentation/Siltation 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 16.09 MILES MT41A004_090 "PEET CREEK, headwaters to mouth (Red Rock River)" Arsenic 2020 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 10.13 MILES MT41A004_090 "PEET CREEK, headwaters to mouth (Red Rock River)" Cadmium 2020 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 10.13 MILES MT41A004_090 "PEET CREEK, headwaters to mouth (Red Rock River)" Copper 2020 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 10.13 MILES MT41A004_090 "PEET CREEK, headwaters to mouth (Red Rock River)" Escherichia coli (E. Coli) 2020 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 10.13 MILES MT41A004_090 "PEET CREEK, headwaters to mouth (Red Rock River)" "Nitrogen, Total" 2006 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 10.13 MILES MT41A004_090 "PEET CREEK, headwaters to mouth (Red Rock River)" "Phosphorus, Total" 2006 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 10.13 MILES MT41A004_090 "PEET CREEK, headwaters to mouth (Red Rock River)" Sedimentation/Siltation 1990 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 10.13 MILES MT41A004_090 "PEET CREEK, headwaters to mouth (Red Rock River)" Selenium 2020 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 10.13 MILES MT41A004_100 "TOM CREEK, headwaters to mouth (Upper Red Rock Lake)" Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 6.6 MILES MT41A004_110 "RED ROCK CREEK, headwaters to mouth (Upper Red Rock Lake)" Sedimentation/Siltation 2020 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 18.38 MILES MT41A004_130 "JONES CREEK, headwaters to mouth (Winslow Creek)" "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low RIVER 8.33 MILES MT41A004_130 "JONES CREEK, headwaters to mouth (Winslow Creek)" Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 8.33 MILES MT41A004_140 "BEAN CREEK, headwaters to mouth (Red Rock River), T14S R3E S7" Sedimentation/Siltation 1996 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock High RIVER 6.62 MILES MT41A005_020 LOWER RED ROCK LAKE Sedimentation/Siltation 2000 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low FRESHWATER LAKE "2,217.50" ACRES MT41A005_030 UPPER RED ROCK LAKE Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Upper Missouri Red Rock Low FRESHWATER LAKE "2,947.00" ACRES MT41B001_010 "BEAVERHEAD RIVER, Clark Canyon Dam to Grasshopper Creek" "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 12.32 MILES MT41B001_010 "BEAVERHEAD RIVER, Clark Canyon Dam to Grasshopper Creek" "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 12.32 MILES MT41B001_020 "BEAVERHEAD RIVER, Grasshopper Creek to mouth (Jefferson River)" "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 66.04 MILES MT41B001_020 "BEAVERHEAD RIVER, Grasshopper Creek to mouth (Jefferson River)" "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 66.04 MILES MT41B002_010 "GRASSHOPPER CREEK, headwaters to mouth (Beaverhead River)" Lead 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 60.18 MILES MT41B002_010 "GRASSHOPPER CREEK, headwaters to mouth (Beaverhead River)" "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 60.18 MILES MT41B002_010 "GRASSHOPPER CREEK, headwaters to mouth (Beaverhead River)" "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 60.18 MILES MT41B002_030 "BLACKTAIL DEER CREEK, headwaters to mouth (Beaverhead River)" "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 42.88 MILES MT41B002_030 "BLACKTAIL DEER CREEK, headwaters to mouth (Beaverhead River)" Temperature 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 42.88 MILES MT41B002_060 "WEST FORK BLACKTAIL DEER CREEK, headwaters to mouth (Blacktail Deer Creek)" Arsenic 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 19.07 MILES MT41B002_070 "WEST FORK DYCE CREEK, headwaters to mouth (Dyce Creek)" "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 3.95 MILES MT41B002_080 "SPRING CREEK, headwaters to mouth (Beaverhead River)" Iron 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 15.67 MILES MT41B002_080 "SPRING CREEK, headwaters to mouth (Beaverhead River)" "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 15.67 MILES MT41B002_080 "SPRING CREEK, headwaters to mouth (Beaverhead River)" "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 15.67 MILES MT41B002_090 "RATTLESNAKE CREEK, from the Dillon PWS off-channel well T7S R10W S11 to the mouth (Van Camp Slough)" Copper 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 9.52 MILES MT41B002_090 "RATTLESNAKE CREEK, from the Dillon PWS off-channel well T7S R10W S11 to the mouth (Van Camp Slough)" Lead 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 9.52 MILES MT41B002_090 "RATTLESNAKE CREEK, from the Dillon PWS off-channel well T7S R10W S11 to the mouth (Van Camp Slough)" "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 9.52 MILES MT41B002_090 "RATTLESNAKE CREEK, from the Dillon PWS off-channel well T7S R10W S11 to the mouth (Van Camp Slough)" "Phosphorus, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 9.52 MILES MT41B002_091 "RATTLESNAKE CREEK, headwaters to Dillon PWS off-channel well, T7S R10W S11" Lead 2006 A-1 5 10020002 Beaverhead Missouri Headwaters Lower Missouri Beaverhead High RIVER 17.95 MILES MT41B002_110 "CLARK CANYON CREEK, headwaters to mouth (Beaverhead River), T9S R10W S28" "Phosphorus, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 8.07 MILES MT41B002_120 "RESERVOIR CREEK, headwaters to mouth (Grasshopper Creek)" "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 12.76 MILES MT41B002_120 "RESERVOIR CREEK, headwaters to mouth (Grasshopper Creek)" "Phosphorus, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 12.76 MILES MT41B002_131 "STONE CREEK, Un-named tributary at T6S R7W S34 to Staudaher Bishop Ditch" Aluminum 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 6.53 MILES MT41B002_131 "STONE CREEK, Un-named tributary at T6S R7W S34 to Staudaher Bishop Ditch" Copper 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 6.53 MILES MT41B002_131 "STONE CREEK, Un-named tributary at T6S R7W S34 to Staudaher Bishop Ditch" Iron 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 6.53 MILES MT41B002_131 "STONE CREEK, Un-named tributary at T6S R7W S34 to Staudaher Bishop Ditch" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 6.53 MILES MT41B002_131 "STONE CREEK, Un-named tributary at T6S R7W S34 to Staudaher Bishop Ditch" "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 6.53 MILES MT41B002_131 "STONE CREEK, Un-named tributary at T6S R7W S34 to Staudaher Bishop Ditch" "Phosphorus, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 6.53 MILES MT41B002_132 "STONE CREEK, Left and Middle Fork to un-named tributary, T6S R7W S34" Iron 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 7.07 MILES MT41B002_132 "STONE CREEK, Left and Middle Fork to un-named tributary, T6S R7W S34" Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 7.07 MILES MT41B002_132 "STONE CREEK, Left and Middle Fork to un-named tributary, T6S R7W S34" "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 7.07 MILES MT41B002_132 "STONE CREEK, Left and Middle Fork to un-named tributary, T6S R7W S34" "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 7.07 MILES MT41B002_140 "DYCE CREEK, confluence of East and West Forks to Grasshopper Creek" "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 4.13 MILES MT41B002_140 "DYCE CREEK, confluence of East and West Forks to Grasshopper Creek" "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 4.13 MILES MT41B002_150 "WELLMAN CREEK, headwaters to mouth (Grasshopper Creek)" Aluminum 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 3.02 MILES MT41B002_150 "WELLMAN CREEK, headwaters to mouth (Grasshopper Creek)" Cadmium 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 3.02 MILES MT41B002_150 "WELLMAN CREEK, headwaters to mouth (Grasshopper Creek)" Copper 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 3.02 MILES MT41B002_150 "WELLMAN CREEK, headwaters to mouth (Grasshopper Creek)" Lead 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 3.02 MILES MT41B002_150 "WELLMAN CREEK, headwaters to mouth (Grasshopper Creek)" Zinc 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 3.02 MILES MT41B002_160 "STEEL CREEK, headwaters to mouth (Driscoll Creek), T6S R12W S18" Arsenic 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead High RIVER 3.66 MILES MT41B002_160 "STEEL CREEK, headwaters to mouth (Driscoll Creek), T6S R12W S18" "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 3.66 MILES MT41B002_160 "STEEL CREEK, headwaters to mouth (Driscoll Creek), T6S R12W S18" "Phosphorus, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 3.66 MILES MT41B002_170 "TAYLOR CREEK, headwaters to mouth (Grasshopper Creek)" "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 11.73 MILES MT41B002_170 "TAYLOR CREEK, headwaters to mouth (Grasshopper Creek)" "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 11.73 MILES MT41B002_180 "SCUDDER CREEK, headwaters to mouth (Grasshopper Creek), T6S R12W S19" "Nitrogen, Total" 2010 B-1 5 10020002 Beaverhead Missouri Headwaters Upper Missouri Beaverhead Low RIVER 5.62 MILES MT41C001_010 "RUBY RIVER, Ruby Dam to mouth (Beaverhead River)" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 48.03 MILES MT41C001_020 "RUBY RIVER, confluence of East, West, and Middle Forks to Ruby Reservoir" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 41.79 MILES MT41C002_010 "WISCONSIN CREEK, headwaters to mouth (Ruby River)" Arsenic 2002 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 13.14 MILES MT41C002_010 "WISCONSIN CREEK, headwaters to mouth (Ruby River)" Copper 2002 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 13.14 MILES MT41C002_010 "WISCONSIN CREEK, headwaters to mouth (Ruby River)" Lead 2002 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 13.14 MILES MT41C002_010 "WISCONSIN CREEK, headwaters to mouth (Ruby River)" Mercury 2002 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 13.14 MILES MT41C002_020 "MILL CREEK, headwaters to mouth (Ruby River)" "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 21.68 MILES MT41C002_020 "MILL CREEK, headwaters to mouth (Ruby River)" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 21.68 MILES MT41C002_040 "ALDER GULCH, headwaters to mouth (Ruby River)" Lead 2000 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 20.65 MILES MT41C002_040 "ALDER GULCH, headwaters to mouth (Ruby River)" Manganese 2000 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 20.65 MILES MT41C002_040 "ALDER GULCH, headwaters to mouth (Ruby River)" Mercury 2000 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 20.65 MILES MT41C002_040 "ALDER GULCH, headwaters to mouth (Ruby River)" "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 20.65 MILES MT41C002_050 "RAMSHORN CREEK, headwaters to mouth (Ruby River)" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 15.2 MILES MT41C002_060 "CURRANT CREEK, headwaters to mouth (Ramshorn Creek), T4S R4W S35" Copper 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 3.72 MILES MT41C002_060 "CURRANT CREEK, headwaters to mouth (Ramshorn Creek), T4S R4W S35" Lead 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 3.72 MILES MT41C002_060 "CURRANT CREEK, headwaters to mouth (Ramshorn Creek), T4S R4W S35" "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 3.72 MILES MT41C002_060 "CURRANT CREEK, headwaters to mouth (Ramshorn Creek), T4S R4W S35" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 3.72 MILES MT41C002_090 "CALIFORNIA CREEK, headwaters to mouth (Ruby River), T5S R4W S30" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 10.94 MILES MT41C002_100 "GARDEN CREEK, headwaters to mouth (Ruby Reservoir)" "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 7.72 MILES MT41C002_100 "GARDEN CREEK, headwaters to mouth (Ruby Reservoir)" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 7.72 MILES MT41C002_110 "MORMON CREEK, headwaters to mouth (Upper end of Ruby River Reservoir )" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 7.86 MILES MT41C003_030 "COTTONWOOD CREEK, headwaters to mouth (Ruby River)" "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 11.15 MILES MT41C003_040 "EAST FORK RUBY RIVER, headwaters to mouth (Ruby River)" "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 10.3 MILES MT41C003_040 "EAST FORK RUBY RIVER, headwaters to mouth (Ruby River)" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 10.3 MILES MT41C003_060 "SWEETWATER CREEK, headwaters to mouth (Ruby River)" Temperature 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 24.72 MILES MT41C003_090 "MIDDLE FORK RUBY RIVER, Divide Creek to mouth (Ruby River)" "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 11.82 MILES MT41C003_090 "MIDDLE FORK RUBY RIVER, Divide Creek to mouth (Ruby River)" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 11.82 MILES MT41C003_110 "POISON CREEK, headwaters to mouth (Ruby River), T11S R3W S18" Cadmium 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 6.2 MILES MT41C003_110 "POISON CREEK, headwaters to mouth (Ruby River), T11S R3W S18" Lead 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 6.2 MILES MT41C003_110 "POISON CREEK, headwaters to mouth (Ruby River), T11S R3W S18" "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 6.2 MILES MT41C003_110 "POISON CREEK, headwaters to mouth (Ruby River), T11S R3W S18" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 6.2 MILES MT41C003_120 "BASIN CREEK, headwaters to mouth (Ruby River), T11S R3W S20" "Nitrogen, Total" 2006 A-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 5.4 MILES MT41C003_120 "BASIN CREEK, headwaters to mouth (Ruby River), T11S R3W S20" "Phosphorus, Total" 2006 A-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 5.4 MILES MT41C003_130 "BURNT CREEK, headwaters to mouth (Ruby River), T10S R3W S21" "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 5.62 MILES MT41C003_130 "BURNT CREEK, headwaters to mouth (Ruby River), T10S R3W S21" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 5.62 MILES MT41C003_140 "HAWKEYE CREEK, headwaters to mouth (Middle Fork Ruby River)" "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Upper Missouri Ruby Low RIVER 4.23 MILES MT41D001_010 "BIG HOLE RIVER, Divide Creek to mouth (Jefferson River)" Cadmium 2000 B-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Lower Big Hole Low RIVER 49.27 MILES MT41D001_010 "BIG HOLE RIVER, Divide Creek to mouth (Jefferson River)" Copper 2000 B-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Lower Big Hole Low RIVER 49.27 MILES MT41D001_010 "BIG HOLE RIVER, Divide Creek to mouth (Jefferson River)" Lead 2000 B-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Lower Big Hole Low RIVER 49.27 MILES MT41D001_010 "BIG HOLE RIVER, Divide Creek to mouth (Jefferson River)" Zinc 2000 B-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Lower Big Hole Low RIVER 49.27 MILES MT41D002_020 "CAMP CREEK, headwaters to mouth (Big Hole River)" Arsenic 2006 B-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Lower Big Hole Low RIVER 15.6 MILES MT41D002_070 "SASSMAN GULCH, headwaters to the end of the stream reach in T4S R9W S9" Arsenic 1988 B-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Lower Big Hole Low RIVER 3.89 MILES MT41D002_120 "WICKIUP CREEK, headwaters to mouth (Camp Creek), T2S R8W S1" Lead 1994 B-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Lower Big Hole Low RIVER 4.09 MILES MT41D002_120 "WICKIUP CREEK, headwaters to mouth (Camp Creek), T2S R8W S1" Mercury 1994 B-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Lower Big Hole Low RIVER 4.09 MILES MT41D002_120 "WICKIUP CREEK, headwaters to mouth (Camp Creek), T2S R8W S1" "Phosphorus, Total" 2006 B-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Lower Big Hole Low RIVER 4.09 MILES MT41D002_120 "WICKIUP CREEK, headwaters to mouth (Camp Creek), T2S R8W S1" Sediment 1994 B-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Lower Big Hole Low RIVER 4.09 MILES MT41D002_150 "CHARCOAL CREEK, headwaters to mouth (Big Hole River)" "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Middle Big Hole Low RIVER 4.06 MILES MT41D002_150 "CHARCOAL CREEK, headwaters to mouth (Big Hole River)" "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Middle Big Hole Low RIVER 4.06 MILES MT41D002_150 "CHARCOAL CREEK, headwaters to mouth (Big Hole River)" Sedimentation/Siltation 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Middle Big Hole Low RIVER 4.06 MILES MT41D003_020 "JERRY CREEK, headwaters to mouth (Big Hole River)" Lead 2000 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Middle Big Hole Low RIVER 12.69 MILES MT41D003_070 "CALIFORNIA CREEK, headwaters to mouth (French Creek-Deep Creek)" Iron 1992 B-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Middle Big Hole Low RIVER 8.28 MILES MT41D003_080 "OREGON CREEK, headwaters to mouth (California Creek-French Creek-Deep Creek)" Lead 2000 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Middle Big Hole Low RIVER 3.09 MILES MT41D003_120 "TWELVEMILE CREEK, headwaters to mouth (Deep Creek)" Sedimentation/Siltation 1992 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Middle Big Hole Low RIVER 9.09 MILES MT41D003_160 "FISHTRAP CREEK, confluence of West & Middle Forks to mouth (Big Hole River)" "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Middle Big Hole Low RIVER 5.85 MILES MT41D003_170 "PINTLAR CREEK, headwaters to mouth (Big Hole River)" Temperature 2000 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Middle Big Hole Low RIVER 21.25 MILES MT41D003_230 "GOLD CREEK, headwaters to mouth (Wise River)" "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Middle Big Hole Low RIVER 4.92 MILES MT41D004_020 "MUSSIGBROD CREEK, headwaters to mouth (North Fork Big Hole River)" Lead 2000 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri North Fork Big Hole Low RIVER 14.62 MILES MT41D004_030 "JOHNSON CREEK, headwaters to mouth (North Fork Big Hole River)" "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri North Fork Big Hole Low RIVER 15.7 MILES MT41D004_040 "SCHULTZ CREEK, headwaters to mouth (Johnson Creek)" Sedimentation/Siltation 1992 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri North Fork Big Hole Low RIVER 3.28 MILES MT41D004_060 "TIE CREEK, headwaters to mouth (North Fork Big Hole River)" "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri North Fork Big Hole Low RIVER 16.49 MILES MT41D004_090 "JOSEPH CREEK, headwaters to mouth (Trail Creek)" Copper 2002 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri North Fork Big Hole Low RIVER 7.29 MILES MT41D004_090 "JOSEPH CREEK, headwaters to mouth (Trail Creek)" Lead 2002 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri North Fork Big Hole Low RIVER 7.29 MILES MT41D004_110 "SWAMP CREEK, headwaters to mouth (Big Hole River)" "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 25 MILES MT41D004_110 "SWAMP CREEK, headwaters to mouth (Big Hole River)" "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 25 MILES MT41D004_120 "ROCK CREEK, headwaters to mouth (Big Hole River)" "Nitrogen, Total" 2002 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 25.62 MILES MT41D004_120 "ROCK CREEK, headwaters to mouth (Big Hole River)" "Phosphorus, Total" 2002 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 25.62 MILES MT41D004_150 "GOVERNOR CREEK, headwaters to mouth (Warm Springs Creek)" Copper 2000 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 19 MILES MT41D004_160 "PINE CREEK, headwaters to mouth (Andrus Creek)" "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 5.37 MILES MT41D004_170 "FOX CREEK, headwaters to mouth (Governor Creek)" "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 6.85 MILES MT41D004_180 "WARM SPRINGS CREEK, headwaters to mouth (Big Hole River)" "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 20 MILES MT41D004_180 "WARM SPRINGS CREEK, headwaters to mouth (Big Hole River)" "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 20 MILES MT41D004_180 "WARM SPRINGS CREEK, headwaters to mouth (Big Hole River)" Sedimentation/Siltation 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 20 MILES MT41D004_190 "STEEL CREEK, headwaters to mouth (Big Hole River)" Cadmium 2000 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 16.69 MILES MT41D004_190 "STEEL CREEK, headwaters to mouth (Big Hole River)" Copper 2000 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 16.69 MILES MT41D004_210 "McVEY CREEK, headwaters to mouth (Big Hole River)" "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 9.48 MILES MT41D004_210 "McVEY CREEK, headwaters to mouth (Big Hole River)" "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Upper Big Hole Low RIVER 9.48 MILES MT41D004_230 "SAWLOG CREEK, headwaters to mouth (Big Hole River)" "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Missouri Middle Big Hole Low RIVER 4.79 MILES MT41F001_010 "MADISON RIVER, Madison Dam to mouth (Missouri River)" Arsenic 2016 B-1 "5,5N" 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 41.31 MILES MT41F001_010 "MADISON RIVER, Madison Dam to mouth (Missouri River)" Sedimentation/Siltation 2000 B-1 "5,5N" 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 41.31 MILES MT41F001_010 "MADISON RIVER, Madison Dam to mouth (Missouri River)" Temperature 1990 B-1 "5,5N" 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 41.31 MILES MT41F001_020 "MADISON RIVER, Quake Lake to Ennis Lake" Arsenic 2016 B-1 "5,5N" 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 56.02 MILES MT41F001_030 "MADISON RIVER, Hebgen Dam to Quake Lake" Arsenic 2016 B-1 "5,5N" 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 2.29 MILES MT41F002_010 "CHERRY CREEK, headwaters to mouth (Madison River)" Sedimentation/Siltation 2016 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 24 MILES MT41F002_010 "CHERRY CREEK, headwaters to mouth (Madison River)" Temperature 2018 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 24 MILES MT41F002_020 "ELK CREEK, headwaters to mouth (Madison River)" Arsenic 2016 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 18.33 MILES MT41F002_020 "ELK CREEK, headwaters to mouth (Madison River)" Sedimentation/Siltation 1992 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 18.33 MILES MT41F002_020 "ELK CREEK, headwaters to mouth (Madison River)" Temperature 2000 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 18.33 MILES MT41F002_020 "ELK CREEK, headwaters to mouth (Madison River)" Turbidity 2000 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 18.33 MILES MT41F002_030 "HOT SPRINGS CREEK, headwaters to mouth (Madison River)" Sedimentation/Siltation 2016 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 14 MILES MT41F004_010 "BLAINE SPRING CREEK, headwaters to mouth (Madison River, T7S R1W S6)" Arsenic 2016 B-1 "5,5N" 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 4.95 MILES MT41F004_010 "BLAINE SPRING CREEK, headwaters to mouth (Madison River, T7S R1W S6)" "Nitrogen, Total" 2006 B-1 "5,5N" 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 4.95 MILES MT41F004_010 "BLAINE SPRING CREEK, headwaters to mouth (Madison River, T7S R1W S6)" Sedimentation/Siltation 2006 B-1 "5,5N" 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 4.95 MILES MT41F004_020 "O'DELL SPRING CREEK, headwaters to mouth (Madison River)" Arsenic 2000 B-1 "5,5N" 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 13.19 MILES MT41F004_021 "BEAR CREEK, headwaters to mouth (O'Dell Spring Creek)" Sedimentation/Siltation 2016 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 27.3 MILES MT41F004_060 "NORTH MEADOW CREEK, headwaters to mouth (Ennis Lake)" Sedimentation/Siltation 1994 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 18.53 MILES MT41F004_070 "SOUTH MEADOW CREEK, headwaters to mouth (Ennis Lake)" Sedimentation/Siltation 2016 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 12.98 MILES MT41F004_080 "RUBY CREEK, headwaters to mouth (Madison River)" Sedimentation/Siltation 2016 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 15.91 MILES MT41F004_100 "WEST FORK MADISON RIVER, headwaters to mouth (Madison River)" Temperature 2000 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 39.41 MILES MT41F004_130 "MOORE CREEK, springs to mouth (Fletcher Channel), T5S R1W S15" Arsenic 2000 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 15.83 MILES MT41F004_130 "MOORE CREEK, springs to mouth (Fletcher Channel), T5S R1W S15" Sedimentation/Siltation 2016 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 15.83 MILES MT41F004_130 "MOORE CREEK, springs to mouth (Fletcher Channel), T5S R1W S15" Temperature 2016 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 15.83 MILES MT41F004_140 "ANTELOPE CREEK, headwaters to mouth (Cliff Lake)" Sedimentation/Siltation 2006 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 9.48 MILES MT41F004_150 "BUFORD CREEK, headwaters to confluence with West Fork Madison River" Arsenic 2006 B-1 "5,5N" 10020007 Madison Missouri Headwaters Upper Missouri Madison Low RIVER 4.36 MILES MT41F004_160 "WIGWAM CREEK, headwaters to mouth (Madison River)" Sedimentation/Siltation 2016 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 11.9 MILES MT41F005_030 ENNIS LAKE Arsenic 2016 B-1 "5,5N" 10020007 Madison Missouri Headwaters Upper Missouri Madison Low FRESHWATER LAKE "3,757.80" ACRES MT41F006_020 "RED CANYON CREEK, headwaters to mouth (Hebgen Lake)" Sedimentation/Siltation 1990 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 6.27 MILES MT41F006_030 "WATKINS CREEK, headwaters to mouth (Hebgen Lake)" Sedimentation/Siltation 2016 B-1 5 10020007 Madison Missouri Headwaters Upper Missouri Madison High RIVER 7.08 MILES MT41G001_011 "JEFFERSON RIVER, headwaters to confluence of Jefferson Slough" Sedimentation/Siltation 1988 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 40.9 MILES MT41G001_012 "JEFFERSON RIVER, confluence of Jefferson Slough to mouth (Missouri River)" Sedimentation/Siltation 1988 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 33.5 MILES MT41G001_012 "JEFFERSON RIVER, confluence of Jefferson Slough to mouth (Missouri River)" Temperature 2000 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 33.5 MILES MT41G002_010 "BIG PIPESTONE CREEK, headwaters to mouth (Jefferson Slough), T1N R4W S11" "Nitrogen, Total" 1990 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 22.46 MILES MT41G002_010 "BIG PIPESTONE CREEK, headwaters to mouth (Jefferson Slough), T1N R4W S11" "Phosphorus, Total" 1990 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 22.46 MILES MT41G002_010 "BIG PIPESTONE CREEK, headwaters to mouth (Jefferson Slough), T1N R4W S11" Temperature 2000 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 22.46 MILES MT41G002_020 "HALFWAY CREEK, headwaters to mouth (Big Pipestone Creek-Jefferson River)" Sedimentation/Siltation 1992 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 7.9 MILES MT41G002_040 "LITTLE PIPESTONE CREEK, headwaters to mouth (Big Pipestone Creek)" "Nitrogen, Total" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 16.86 MILES MT41G002_040 "LITTLE PIPESTONE CREEK, headwaters to mouth (Big Pipestone Creek)" "Phosphorus, Total" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 16.86 MILES MT41G002_050 "NORTH WILLOW CREEK, headwaters to mouth (Willow Creek)" Lead 1992 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 17.62 MILES MT41G002_050 "NORTH WILLOW CREEK, headwaters to mouth (Willow Creek)" Mercury 1992 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 17.62 MILES MT41G002_060 "SOUTH BOULDER RIVER, headwaters to mouth (Jefferson River)" Arsenic 2000 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 23.32 MILES MT41G002_060 "SOUTH BOULDER RIVER, headwaters to mouth (Jefferson River)" Copper 2000 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 23.32 MILES MT41G002_060 "SOUTH BOULDER RIVER, headwaters to mouth (Jefferson River)" Lead 2000 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 23.32 MILES MT41G002_060 "SOUTH BOULDER RIVER, headwaters to mouth (Jefferson River)" Mercury 2000 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 23.32 MILES MT41G002_060 "SOUTH BOULDER RIVER, headwaters to mouth (Jefferson River)" "Phosphorus, Total" 2000 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 23.32 MILES MT41G002_080 "WILLOW CREEK, North and South Fork confluence to mouth (Jefferson River)" Temperature 2000 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 15.28 MILES MT41G002_080 "WILLOW CREEK, North and South Fork confluence to mouth (Jefferson River)" Zinc 2000 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 15.28 MILES MT41G002_090 "NORWEGIAN CREEK, headwaters to mouth (Willow Creek Reservoir)" Arsenic 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 10.82 MILES MT41G002_090 "NORWEGIAN CREEK, headwaters to mouth (Willow Creek Reservoir)" "Nitrogen, Total" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 10.82 MILES MT41G002_090 "NORWEGIAN CREEK, headwaters to mouth (Willow Creek Reservoir)" "Phosphorus, Total" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 10.82 MILES MT41G002_090 "NORWEGIAN CREEK, headwaters to mouth (Willow Creek Reservoir)" Sedimentation/Siltation 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 10.82 MILES MT41G002_090 "NORWEGIAN CREEK, headwaters to mouth (Willow Creek Reservoir)" Temperature 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 10.82 MILES MT41G002_130 "SOUTH WILLOW CREEK, headwaters to mouth (Willow Creek)" Sedimentation/Siltation 1992 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 16.2 MILES MT41G002_130 "SOUTH WILLOW CREEK, headwaters to mouth (Willow Creek)" Zinc 1992 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 16.2 MILES MT41G002_141 "WHITETAIL DEER CREEK, headwaters to mouth (Jefferson Slough)" "Ammonia, Un-ionized" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 27.13 MILES MT41G002_141 "WHITETAIL DEER CREEK, headwaters to mouth (Jefferson Slough)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1994 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 27.13 MILES MT41G002_141 "WHITETAIL DEER CREEK, headwaters to mouth (Jefferson Slough)" "Nitrogen, Total" 1994 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 27.13 MILES MT41G002_141 "WHITETAIL DEER CREEK, headwaters to mouth (Jefferson Slough)" "Phosphorus, Total" 1994 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 27.13 MILES MT41G002_150 "CHARCOAL CREEK, headwaters to mouth (Pony Creek)" Sedimentation/Siltation 1994 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Lower Jefferson Low RIVER 2.72 MILES MT41G002_160 "FITZ CREEK, headwaters to mouth (Whitetail Deer Creek)" "Phosphorus, Total" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 4.71 MILES MT41G002_160 "FITZ CREEK, headwaters to mouth (Whitetail Deer Creek)" Sedimentation/Siltation 1996 B-1 5 10020005 Jefferson Missouri Headwaters Upper Missouri Upper Jefferson Low RIVER 4.71 MILES MT41H005_010 "STORM CASTLE CREEK, headwaters to the mouth (Gallatin River), T4S R4E S33" "Phosphorus, Total" 2000 B-1 5 10020008 Gallatin Missouri Headwaters Upper Missouri Upper Gallatin Low RIVER 14.19 MILES MT41H005_020 "TAYLOR FORK, Lee Metcalf Wilderness boundary to mouth (Gallatin River)" Sedimentation/Siltation 2000 B-1 5 10020008 Gallatin Missouri Headwaters Upper Missouri Upper Gallatin Low RIVER 13.98 MILES MT41H005_030 "CACHE CREEK, headwaters to mouth (Taylor Fork)" Sedimentation/Siltation 1988 B-1 5 10020008 Gallatin Missouri Headwaters Upper Missouri Upper Gallatin Low RIVER 4.66 MILES MT41H005_040 "WEST FORK GALLATIN RIVER, confluence Middle and North Forks to mouth (Gallatin River)" "Phosphorus, Total" 2000 B-1 5 10020008 Gallatin Missouri Headwaters Upper Missouri Upper Gallatin Low RIVER 3.87 MILES MT41H005_060 "SOUTH FORK WEST FORK GALLATIN RIVER, headwaters to mouth (West Fork Gallatin River)" "Phosphorus, Total" 2000 B-1 5 10020008 Gallatin Missouri Headwaters Upper Missouri Upper Gallatin Low RIVER 14.57 MILES MT41I001_011 "MISSOURI RIVER, headwaters to Toston Dam" Arsenic 2006 B-1 "5,5N" 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low RIVER 21.95 MILES MT41I001_011 "MISSOURI RIVER, headwaters to Toston Dam" "Nitrogen, Total" 1988 B-1 "5,5N" 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Medium RIVER 21.95 MILES MT41I001_011 "MISSOURI RIVER, headwaters to Toston Dam" Sedimentation/Siltation 1988 B-1 "5,5N" 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low RIVER 21.95 MILES MT41I001_012 "MISSOURI RIVER, Toston Dam to Canyon Ferry Reservoir" Cadmium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low RIVER 22.6 MILES MT41I001_012 "MISSOURI RIVER, Toston Dam to Canyon Ferry Reservoir" Copper 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low RIVER 22.6 MILES MT41I001_012 "MISSOURI RIVER, Toston Dam to Canyon Ferry Reservoir" Lead 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low RIVER 22.6 MILES MT41I001_012 "MISSOURI RIVER, Toston Dam to Canyon Ferry Reservoir" Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low RIVER 22.6 MILES MT41I002_020 "BATTLE CREEK, headwaters to mouth (Sixteenmile Creek)" "Phosphorus, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 22.76 MILES MT41I002_020 "BATTLE CREEK, headwaters to mouth (Sixteenmile Creek)" Sedimentation/Siltation 1990 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 22.76 MILES MT41I002_020 "BATTLE CREEK, headwaters to mouth (Sixteenmile Creek)" Temperature 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 22.76 MILES MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" Cadmium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 14.74 MILES MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" "Chromium, Total" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 14.74 MILES MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" Lead 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 14.74 MILES MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 14.74 MILES MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" "Phosphorus, Total" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 14.74 MILES MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" Silver 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 14.74 MILES MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" Zinc 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 14.74 MILES MT41I002_041 "CONFEDERATE GULCH, headwaters to Hunter Gulch" Cadmium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 10.04 MILES MT41I002_041 "CONFEDERATE GULCH, headwaters to Hunter Gulch" Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 10.04 MILES MT41I002_042 "CONFEDERATE GULCH, Hunter Gulch to mouth (Canyon Ferry Reservoir)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 5.21 MILES MT41I002_042 "CONFEDERATE GULCH, Hunter Gulch to mouth (Canyon Ferry Reservoir)" "Phosphorus, Total" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 5.21 MILES MT41I002_050 "CROW CREEK, National Forest boundary to mouth (Missouri River)" "Nitrogen, Total" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 15.89 MILES MT41I002_050 "CROW CREEK, National Forest boundary to mouth (Missouri River)" "Phosphorus, Total" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 15.89 MILES MT41I002_050 "CROW CREEK, National Forest boundary to mouth (Missouri River)" Sedimentation/Siltation 1996 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 15.89 MILES MT41I002_060 "CROW CREEK, Crow Creek Falls to National Forest boundary" Copper 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 10.15 MILES MT41I002_060 "CROW CREEK, Crow Creek Falls to National Forest boundary" Lead 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 10.15 MILES MT41I002_070 "DEEP CREEK, National Forest boundary to mouth (Missouri River)" Temperature 2016 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Deep Creek Low RIVER 20.35 MILES MT41I002_080 "DRY CREEK, headwaters to mouth (Missouri River)" "Phosphorus, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 21.56 MILES MT41I002_080 "DRY CREEK, headwaters to mouth (Missouri River)" Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 21.56 MILES MT41I002_080 "DRY CREEK, headwaters to mouth (Missouri River)" Temperature 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 21.56 MILES MT41I002_090 "HELLGATE GULCH, headwaters to mouth (Canyon Ferry Reservoir)" Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 11.6 MILES MT41I002_100 "INDIAN CREEK, headwaters to mouth (Missouri River)" Arsenic 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 8.01 MILES MT41I002_100 "INDIAN CREEK, headwaters to mouth (Missouri River)" Cadmium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 8.01 MILES MT41I002_100 "INDIAN CREEK, headwaters to mouth (Missouri River)" Lead 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 8.01 MILES MT41I002_100 "INDIAN CREEK, headwaters to mouth (Missouri River)" Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 8.01 MILES MT41I002_110 "MAGPIE CREEK, headwaters to mouth (Canyon Ferry Reservoir)" "Nitrogen, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 12.76 MILES MT41I002_110 "MAGPIE CREEK, headwaters to mouth (Canyon Ferry Reservoir)" Sedimentation/Siltation 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 12.76 MILES MT41I002_120 "SIXTEENMILE CREEK, Lost Creek to mouth (Missouri River)" "Nitrogen, Total" 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 49.61 MILES MT41I002_120 "SIXTEENMILE CREEK, Lost Creek to mouth (Missouri River)" "Phosphorus, Total" 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 49.61 MILES MT41I002_120 "SIXTEENMILE CREEK, Lost Creek to mouth (Missouri River)" Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 49.61 MILES MT41I002_130 "WHITE GULCH, headwaters to mouth (Canyon Ferry Reservoir)" Sedimentation/Siltation 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 13.26 MILES MT41I002_140 "WILSON CREEK, 3.3 miles upstream to mouth (Crow Creek)" Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 3.3 MILES MT41I002_150 "CAVE GULCH, headwaters to mouth (Canyon Ferry Reservoir)" "Nitrogen, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 6.42 MILES MT41I002_150 "CAVE GULCH, headwaters to mouth (Canyon Ferry Reservoir)" "Phosphorus, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 6.42 MILES MT41I002_150 "CAVE GULCH, headwaters to mouth (Canyon Ferry Reservoir)" Sedimentation/Siltation 1992 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 6.42 MILES MT41I002_170 "EAST FORK INDIAN CREEK, headwaters to mouth (Indian Creek)" Arsenic 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 5.87 MILES MT41I002_170 "EAST FORK INDIAN CREEK, headwaters to mouth (Indian Creek)" Cadmium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 5.87 MILES MT41I002_170 "EAST FORK INDIAN CREEK, headwaters to mouth (Indian Creek)" Lead 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 5.87 MILES MT41I002_170 "EAST FORK INDIAN CREEK, headwaters to mouth (Indian Creek)" Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 5.87 MILES MT41I003_010 CANYON FERRY RESERVOIR "Ammonia, Un-ionized" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "32,810.00" ACRES MT41I003_010 CANYON FERRY RESERVOIR Arsenic 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "32,810.00" ACRES MT41I003_010 CANYON FERRY RESERVOIR Thallium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "32,810.00" ACRES MT41I004_030 "MISSOURI RIVER, Holter Dam to Little Prickly Pear Creek" "Nitrogen, Total" 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Medium RIVER 2.84 MILES MT41I004_030 "MISSOURI RIVER, Holter Dam to Little Prickly Pear Creek" "Phosphorus, Total" 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Medium RIVER 2.84 MILES MT41I004_030 "MISSOURI RIVER, Holter Dam to Little Prickly Pear Creek" Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low RIVER 2.84 MILES MT41I005_011 "BEAVER CREEK, headwaters to confluence of Bridge Creek" Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Holter Low RIVER 13.8 MILES MT41I005_012 "BEAVER CREEK, Nelson to mouth (Missouri River below Hauser Dam)" Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Holter Low RIVER 5.51 MILES MT41I005_020 "TROUT CREEK, headwaters to mouth (Hauser Lake)" Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Canyon Ferry Low RIVER 20.52 MILES MT41I005_040 "VIRGINIA CREEK, headwaters to mouth (Canyon Creek)" Lead 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Holter Low RIVER 8.25 MILES MT41I005_051 "LITTLE PRICKLY PEAR CREEK, North and South Forks to Clark Creek" Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Holter Low RIVER 23.9 MILES MT41I005_051 "LITTLE PRICKLY PEAR CREEK, North and South Forks to Clark Creek" Temperature 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Holter Low RIVER 23.9 MILES MT41I005_052 "LITTLE PRICKLY PEAR CREEK, Clark Creek to mouth (Missouri River)" Temperature 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Holter Low RIVER 10.23 MILES MT41I005_080 "WOODSIDING GULCH, headwaters to mouth (Little Prickly Pear Creek), T13N R4W S33" "Phosphorus, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Holter Low RIVER 2.19 MILES MT41I006_020 "PRICKLY PEAR CREEK, Helena WWTP Discharge Ditch to Lake Helena" "Ammonia, Un-ionized" 1990 I 5 10030101 Upper Missouri Upper Missouri Upper Missouri Lake Helena Low RIVER 4.15 MILES MT41I006_020 "PRICKLY PEAR CREEK, Helena WWTP Discharge Ditch to Lake Helena" Temperature 2000 I 5 10030101 Upper Missouri Upper Missouri Upper Missouri Lake Helena Low RIVER 4.15 MILES MT41I006_030 "PRICKLY PEAR CREEK, Highway 433 (Wylie Dr.) Crossing to Helena WWTP Discharge" "Ammonia, Un-ionized" 2006 I 5 10030101 Upper Missouri Upper Missouri Upper Missouri Lake Helena Low RIVER 6.54 MILES MT41I006_030 "PRICKLY PEAR CREEK, Highway 433 (Wylie Dr.) Crossing to Helena WWTP Discharge" Temperature 2000 I 5 10030101 Upper Missouri Upper Missouri Upper Missouri Lake Helena Low RIVER 6.54 MILES MT41I006_090 "CORBIN CREEK, headwaters to mouth (Spring Creek)" Temperature 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Lake Helena Low RIVER 2.82 MILES MT41I006_141 "TENMILE CREEK, headwaters to confluence of Spring Creek" Sedimentation/Siltation 1988 A-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Lake Helena Low RIVER 6.72 MILES MT41I006_150 "SILVER CREEK, headwaters to T11N R4W S30 / S31 to Lake Helena" DDE (Dichlorodiphenyldichloroethylene) 1992 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Lake Helena Low RIVER 22.1 MILES MT41I006_180 "NORTH FORK WARM SPRINGS CREEK, headwaters to mouth (Warmsprings Creek)" Organic Enrichment 2002 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Lake Helena Low RIVER 2.7 MILES MT41I006_210 "JENNIES FORK, headwaters to mouth (Silver Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Lake Helena Low RIVER 1.36 MILES MT41I006_210 "JENNIES FORK, headwaters to mouth (Silver Creek)" "Phosphorus, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Lake Helena Low RIVER 1.36 MILES MT41I007_020 HOLTER LAKE Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "4,358.00" ACRES MT41I007_040 HAUSER LAKE Arsenic 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "3,190.00" ACRES MT41I007_040 HAUSER LAKE DDT (Dichlorodiphenyltrichloroethane) 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "3,190.00" ACRES MT41I007_040 HAUSER LAKE Dissolved Oxygen 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "3,190.00" ACRES MT41I007_040 HAUSER LAKE Endosulfan sulfate 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "3,190.00" ACRES MT41I007_040 HAUSER LAKE Endrin aldehyde 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "3,190.00" ACRES MT41I007_040 HAUSER LAKE Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "3,190.00" ACRES MT41I007_040 HAUSER LAKE Nitrate/Nitrite (Nitrite + Nitrate as N) 2010 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "3,190.00" ACRES MT41I007_040 HAUSER LAKE "Phosphorus, Total" 2010 B-1 5 10030101 Upper Missouri Upper Missouri Upper Missouri Missouri River Low FRESHWATER LAKE "3,190.00" ACRES MT41J001_010 "SMITH RIVER, North and South Forks to Hound Creek" Escherichia coli (E. Coli) 2000 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 98.1 MILES MT41J001_010 "SMITH RIVER, North and South Forks to Hound Creek" "Phosphorus, Total" 2000 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Medium RIVER 98.1 MILES MT41J001_020 "SMITH RIVER, Hound Creek to mouth (Missouri River)" "Phosphorus, Total" 2000 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Medium RIVER 24.14 MILES MT41J001_020 "SMITH RIVER, Hound Creek to mouth (Missouri River)" Temperature 1988 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 24.14 MILES MT41J002_011 "NORTH FORK SMITH RIVER, Lake Sutherlin to mouth (Smith River), T9N R6E S21" Escherichia coli (E. Coli) 2000 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 23 MILES MT41J002_011 "NORTH FORK SMITH RIVER, Lake Sutherlin to mouth (Smith River), T9N R6E S21" "Nitrogen, Total" 2000 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 23 MILES MT41J002_011 "NORTH FORK SMITH RIVER, Lake Sutherlin to mouth (Smith River), T9N R6E S21" "Phosphorus, Total" 2000 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 23 MILES MT41J002_020 "HOUND CREEK, Spring Creek to mouth (Smith River)" "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 6.71 MILES MT41J002_030 "SHEEP CREEK, headwaters to mouth (Smith River)" Aluminum 2012 B-1 "5,5N" 10030103 Smith Upper Missouri Upper Missouri Smith High RIVER 41.31 MILES MT41J002_040 "BEAVER CREEK, headwaters to mouth (Smith River)" "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 20.58 MILES MT41J002_040 "BEAVER CREEK, headwaters to mouth (Smith River)" "Phosphorus, Total" 2006 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 20.58 MILES MT41J002_040 "BEAVER CREEK, headwaters to mouth (Smith River)" Sedimentation/Siltation 1990 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 20.58 MILES MT41J002_050 "BENTON GULCH, headwaters to mouth (Smith River)" Escherichia coli (E. Coli) 2000 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 13.41 MILES MT41J002_060 "ELK CREEK, headwaters to mouth (Camas Creek)" "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 10.41 MILES MT41J002_060 "ELK CREEK, headwaters to mouth (Camas Creek)" "Phosphorus, Total" 2006 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 10.41 MILES MT41J002_060 "ELK CREEK, headwaters to mouth (Camas Creek)" Sedimentation/Siltation 1990 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 10.41 MILES MT41J002_060 "ELK CREEK, headwaters to mouth (Camas Creek)" Temperature 1988 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 10.41 MILES MT41J002_070 "THOMPSON GULCH, headwaters to mouth (Smith River)" "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 10.81 MILES MT41J002_070 "THOMPSON GULCH, headwaters to mouth (Smith River)" Sedimentation/Siltation 1988 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 10.81 MILES MT41J002_081 "NEWLAN CREEK, Newlan Reservoir to mouth (Smith River)" Escherichia coli (E. Coli) 2010 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 9.01 MILES MT41J002_081 "NEWLAN CREEK, Newlan Reservoir to mouth (Smith River)" Sedimentation/Siltation 1988 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 9.01 MILES MT41J002_081 "NEWLAN CREEK, Newlan Reservoir to mouth (Smith River)" Temperature 2006 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 9.01 MILES MT41J002_082 "NEWLAN CREEK, headwaters to Newlan Reservoir" Cadmium 2006 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 13.3 MILES MT41J002_082 "NEWLAN CREEK, headwaters to Newlan Reservoir" "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 13.3 MILES MT41J002_082 "NEWLAN CREEK, headwaters to Newlan Reservoir" "Phosphorus, Total" 2006 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 13.3 MILES MT41J002_082 "NEWLAN CREEK, headwaters to Newlan Reservoir" Sedimentation/Siltation 1988 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 13.3 MILES MT41J002_100 "LITTLE CAMAS CREEK, headwaters to mouth (Camas Creek)" "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 3.82 MILES MT41J002_100 "LITTLE CAMAS CREEK, headwaters to mouth (Camas Creek)" Temperature 1990 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 3.82 MILES MT41J002_110 "CAMAS CREEK, junction of Big and Little Camas Creeks to mouth (Smith River)" Escherichia coli (E. Coli) 2000 B-1 5 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 14.28 MILES MT41J002_120 "MOOSE CREEK, headwaters to mouth (Sheep Creek)" Aluminum 2016 B-1 "5,5N" 10030103 Smith Upper Missouri Upper Missouri Smith Low RIVER 11.63 MILES MT41K002_040 "HUBER COULEE, headwaters to mouth (Sun River Valley Ditch)" Escherichia coli (E. Coli) 2012 B-1 5 10030104 Sun Upper Missouri Upper Missouri Sun Low RIVER 3.6 MILES MT41K004_030 FREEZEOUT LAKE "Phosphorus, Total" 2000 B-2 5 10030205 Teton Marias Lower Missouri Sun Low FRESHWATER LAKE "3,013.20" ACRES MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" "Ammonia, Total" 1990 B-1 5 10030202 Cut Bank Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 17.6 MILES MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" Chloride 1990 B-1 5 10030202 Cut Bank Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 17.6 MILES MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-1 5 10030202 Cut Bank Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 17.6 MILES MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" "Phosphorus, Total" 1990 B-1 5 10030202 Cut Bank Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 17.6 MILES MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" Specific Conductivity 1990 B-1 5 10030202 Cut Bank Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 17.6 MILES MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" Total Dissolved Solids (TDS) 1990 B-1 5 10030202 Cut Bank Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 17.6 MILES MT41L001_040 "CUT BANK CREEK, Blackfeet Reservation boundary to mouth (Marias River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1988 B-2 5 10030202 Cut Bank Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 21.07 MILES MT41L001_040 "CUT BANK CREEK, Blackfeet Reservation boundary to mouth (Marias River)" Temperature 1990 B-2 5 10030202 Cut Bank Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 21.07 MILES MT41M002_080 "BIRCH CREEK, Blacktail Creek to mouth (Two Medicine River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10030201 Two Medicine Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 37.2 MILES MT41M002_110 "DUPUYER CREEK, confluence of South Fork Dupuyer Creek and Middle Fork Dupuyer Creek to the mouth (Birch Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 "5,5N" 10030201 Two Medicine Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 39.28 MILES MT41M002_110 "DUPUYER CREEK, confluence of South Fork Dupuyer Creek and Middle Fork Dupuyer Creek to the mouth (Birch Creek)" Sedimentation/Siltation 2006 B-1 "5,5N" 10030201 Two Medicine Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 39.28 MILES MT41M002_110 "DUPUYER CREEK, confluence of South Fork Dupuyer Creek and Middle Fork Dupuyer Creek to the mouth (Birch Creek)" Temperature 1992 B-1 "5,5N" 10030201 Two Medicine Marias Lower Missouri Cut Bank - Two Medicine Low RIVER 39.28 MILES MT41P002_030 "PONDERA COULEE, headwaters to mouth (Marias River)" Salinity 1988 B-2 5 10030203 Marias Marias Lower Missouri Marias - Willow Low RIVER 135.95 MILES MT41P002_050 "CORRAL CREEK, headwaters to mouth (Cottonwood Creek)" "Phosphorus, Total" 2000 B-2 5 10030203 Marias Marias Lower Missouri Marias - Willow Low RIVER 22.98 MILES MT41P004_020 "EAGLE CREEK, headwaters to mouth (Lake Elwell (Tiber Reservoir))" "Nitrogen, Total" 2000 B-2 5 10030204 Willow Marias Lower Missouri Marias - Willow Low RIVER 52.65 MILES MT41P004_020 "EAGLE CREEK, headwaters to mouth (Lake Elwell (Tiber Reservoir))" "Phosphorus, Total" 2000 B-2 5 10030204 Willow Marias Lower Missouri Marias - Willow Low RIVER 52.65 MILES MT41P005_010 OILMONT WETLAND Arsenic 2000 B-2 5 10030204 Willow Marias Lower Missouri Marias - Willow Low FRESHWATER LAKE 21 ACRES MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" "Chromium, Total" 1992 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 6.99 MILES MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" Mercury 1992 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 6.99 MILES MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" Polychlorinated Biphenyls (PCBs) 2012 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 6.99 MILES MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" Sedimentation/Siltation 1988 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 6.99 MILES MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" Selenium 1992 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 6.99 MILES MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" Turbidity 2000 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 6.99 MILES MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" Arsenic 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 9.12 MILES MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" Copper 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 9.12 MILES MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" Polychlorinated Biphenyls (PCBs) 2012 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 9.12 MILES MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" Sedimentation/Siltation 1988 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 9.12 MILES MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" Temperature 2000 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 9.12 MILES MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" Turbidity 2000 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 9.12 MILES MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" Aluminum 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 54.62 MILES MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" Arsenic 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 54.62 MILES MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" Cadmium 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 54.62 MILES MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" Copper 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 54.62 MILES MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" Iron 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 54.62 MILES MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" Lead 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 54.62 MILES MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" "Nitrogen, Total" 1988 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Medium RIVER 54.62 MILES MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" "Phosphorus, Total" 1988 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Medium RIVER 54.62 MILES MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" Sedimentation/Siltation 1988 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 54.62 MILES MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" Zinc 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 54.62 MILES MT41Q001_021 "MISSOURI RIVER, Little Prickly Pear Creek to Sheep Creek" Arsenic 1992 B-1 "5,5N" 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 20.93 MILES MT41Q001_021 "MISSOURI RIVER, Little Prickly Pear Creek to Sheep Creek" "Nitrogen, Total" 1988 B-1 "5,5N" 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Medium RIVER 20.93 MILES MT41Q001_021 "MISSOURI RIVER, Little Prickly Pear Creek to Sheep Creek" Sedimentation/Siltation 1988 B-1 "5,5N" 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 20.93 MILES MT41Q001_022 "MISSOURI RIVER, Sheep Creek to Sun River" Sedimentation/Siltation 1988 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri River Low RIVER 65.3 MILES MT41Q002_010 "LAKE CREEK, headwaters to mouth (Benton Lake)" Cadmium 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Benton Lake Low RIVER 19.03 MILES MT41Q002_010 "LAKE CREEK, headwaters to mouth (Benton Lake)" Salinity 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Benton Lake Low RIVER 19.03 MILES MT41Q002_010 "LAKE CREEK, headwaters to mouth (Benton Lake)" Sedimentation/Siltation 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Benton Lake Low RIVER 19.03 MILES MT41Q002_010 "LAKE CREEK, headwaters to mouth (Benton Lake)" Selenium 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Benton Lake Low RIVER 19.03 MILES MT41Q002_010 "LAKE CREEK, headwaters to mouth (Benton Lake)" Zinc 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Benton Lake Low RIVER 19.03 MILES MT41Q002_020 "COTTONWOOD CREEK, 1 mile above Stockett to mouth (Sand Coulee Creek-Missouri River)" Arsenic 2016 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri Cascade Low RIVER 4.32 MILES MT41Q002_020 "COTTONWOOD CREEK, 1 mile above Stockett to mouth (Sand Coulee Creek-Missouri River)" Copper 2016 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri Cascade Low RIVER 4.32 MILES MT41Q002_020 "COTTONWOOD CREEK, 1 mile above Stockett to mouth (Sand Coulee Creek-Missouri River)" Lead 2016 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri Cascade Low RIVER 4.32 MILES MT41Q002_030 "NUMBER FIVE COULEE, headwaters to mouth (Cottonwood Creek)" Lead 1988 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri Cascade Low RIVER 13.68 MILES MT41Q002_040 "SAND COULEE CREEK, confluence with Cottonwood Creek to the mouth (Missouri River)" Lead 1988 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri Cascade Low RIVER 18.63 MILES MT41Q002_040 "SAND COULEE CREEK, confluence with Cottonwood Creek to the mouth (Missouri River)" Salinity 2000 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri Cascade Low RIVER 18.63 MILES MT41Q002_040 "SAND COULEE CREEK, confluence with Cottonwood Creek to the mouth (Missouri River)" Zinc 1988 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri Cascade Low RIVER 18.63 MILES MT41Q002_050 "BOX ELDER CREEK, Spring Creek to mouth (Missouri River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri Choteau Low RIVER 17.47 MILES MT41Q002_050 "BOX ELDER CREEK, Spring Creek to mouth (Missouri River)" Sedimentation/Siltation 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Missouri Choteau Low RIVER 17.47 MILES MT41Q003_010 "DEARBORN RIVER, Falls Creek to mouth (Missouri River)" Temperature 1990 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Dearborn Low RIVER 48.26 MILES MT41Q005_020 BENTON LAKE "Nitrogen, Total" 2000 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Benton Lake Low FRESHWATER LAKE "5,345.10" ACRES MT41Q005_020 BENTON LAKE Salinity 2006 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Benton Lake Low FRESHWATER LAKE "5,345.10" ACRES MT41Q005_020 BENTON LAKE Selenium 2000 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Benton Lake Low FRESHWATER LAKE "5,345.10" ACRES MT41Q005_020 BENTON LAKE Sulfate 2000 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Upper Missouri Benton Lake Low FRESHWATER LAKE "5,345.10" ACRES MT41R001_010 "COFFEE CREEK, headwaters to mouth (Arrow Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 C-3 5 10040102 Arrow Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 52.13 MILES MT41R001_010 "COFFEE CREEK, headwaters to mouth (Arrow Creek)" Selenium 2006 C-3 5 10040102 Arrow Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 52.13 MILES MT41R001_010 "COFFEE CREEK, headwaters to mouth (Arrow Creek)" Total Dissolved Solids (TDS) 2006 C-3 5 10040102 Arrow Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 52.13 MILES MT41R001_020 "ARROW CREEK, Surprise Creek to mouth (Missouri River)" Iron 2006 C-3 "5,5N" 10040102 Arrow Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 69.7 MILES MT41S001_020 "JUDITH RIVER, Ross Fork to Big Spring Creek" Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 16.15 MILES MT41S001_020 "JUDITH RIVER, Ross Fork to Big Spring Creek" Sedimentation/Siltation 1988 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 16.15 MILES MT41S002_010 "DRY WOLF CREEK, headwaters to mouth (Wolf Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 34.55 MILES MT41S002_010 "DRY WOLF CREEK, headwaters to mouth (Wolf Creek)" "Nitrogen, Total" 1990 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 34.55 MILES MT41S002_010 "DRY WOLF CREEK, headwaters to mouth (Wolf Creek)" "Phosphorus, Total" 1990 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 34.55 MILES MT41S002_010 "DRY WOLF CREEK, headwaters to mouth (Wolf Creek)" Salinity 1988 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 34.55 MILES MT41S002_020 "WOLF CREEK, Dry Wolf Creek to mouth (Judith River)" Iron 2006 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 45.29 MILES MT41S002_020 "WOLF CREEK, Dry Wolf Creek to mouth (Judith River)" Selenium 2006 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 45.29 MILES MT41S002_020 "WOLF CREEK, Dry Wolf Creek to mouth (Judith River)" Total Dissolved Solids (TDS) 1992 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 45.29 MILES MT41S002_030 "WARM SPRING CREEK, 5 miles upstream to mouth (Judith River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 10.74 MILES MT41S002_030 "WARM SPRING CREEK, 5 miles upstream to mouth (Judith River)" "Nitrogen, Total" 2000 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 10.74 MILES MT41S002_030 "WARM SPRING CREEK, 5 miles upstream to mouth (Judith River)" "Phosphorus, Total" 2000 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 10.74 MILES MT41S002_030 "WARM SPRING CREEK, 5 miles upstream to mouth (Judith River)" Sedimentation/Siltation 1988 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 10.74 MILES MT41S002_050 "SAGE CREEK, headwaters to mouth (Judith River)" Iron 2006 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 70.08 MILES MT41S002_050 "SAGE CREEK, headwaters to mouth (Judith River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 70.08 MILES MT41S002_050 "SAGE CREEK, headwaters to mouth (Judith River)" "Nitrogen, Total" 2006 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 70.08 MILES MT41S002_070 "ROSS FORK JUDITH RIVER, headwaters to mouth (Judith River)" Biochemical oxygen demand (BOD) 2006 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 64.23 MILES MT41S002_070 "ROSS FORK JUDITH RIVER, headwaters to mouth (Judith River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 64.23 MILES MT41S002_070 "ROSS FORK JUDITH RIVER, headwaters to mouth (Judith River)" Sedimentation/Siltation 1988 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 64.23 MILES MT41S002_080 "SOUTH FORK JUDITH RIVER, headwaters to mouth" Sedimentation/Siltation 1992 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 21.16 MILES MT41S002_100 "LAST CHANCE CREEK, headwaters to mouth (Moccasin Creek)" Cyanide 2004 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 6.17 MILES MT41S002_100 "LAST CHANCE CREEK, headwaters to mouth (Moccasin Creek)" Iron 2004 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 6.17 MILES MT41S002_100 "LAST CHANCE CREEK, headwaters to mouth (Moccasin Creek)" Selenium 2004 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 6.17 MILES MT41S002_100 "LAST CHANCE CREEK, headwaters to mouth (Moccasin Creek)" Thallium 2004 C-3 5 10040103 Judith Fort Peck Lake Lower Missouri Judith - Arrow Low RIVER 6.17 MILES MT41S004_040 "CASINO CREEK, headwaters to mouth (Big Spring Creek)" "Nitrogen, Total" 1992 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Big Springs Low RIVER 13.56 MILES MT41S004_040 "CASINO CREEK, headwaters to mouth (Big Spring Creek)" "Phosphorus, Total" 1992 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Big Springs Low RIVER 13.56 MILES MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" Dissolved Oxygen 1992 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Big Springs Low RIVER 19.97 MILES MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1992 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Big Springs Low RIVER 19.97 MILES MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" "Nitrogen, Total" 1992 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Big Springs Low RIVER 19.97 MILES MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" "Phosphorus, Total" 1992 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Big Springs Low RIVER 19.97 MILES MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" Sedimentation/Siltation 1992 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Big Springs Low RIVER 19.97 MILES MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" Total Kjehldahl Nitrogen (TKN) 1992 B-1 5 10040103 Judith Fort Peck Lake Lower Missouri Big Springs Low RIVER 19.97 MILES MT41T001_010 "MISSOURI RIVER, the Marias River to Bullwhacker Creek" Copper 2000 B-3 5 10040101 Bullwhacker-Dog Fort Peck Lake Lower Missouri Missouri River Low RIVER 102.05 MILES MT41T001_010 "MISSOURI RIVER, the Marias River to Bullwhacker Creek" Lead 2000 B-3 5 10040101 Bullwhacker-Dog Fort Peck Lake Lower Missouri Missouri River Low RIVER 102.05 MILES MT41T002_020 "DOG CREEK, Cutbank Creek to mouth (Missouri River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2004 C-3 5 10040101 Bullwhacker-Dog Fort Peck Lake Lower Missouri Bullwhacker - Dog Low RIVER 26.03 MILES MT41T002_020 "DOG CREEK, Cutbank Creek to mouth (Missouri River)" Sedimentation/Siltation 2004 C-3 5 10040101 Bullwhacker-Dog Fort Peck Lake Lower Missouri Bullwhacker - Dog Low RIVER 26.03 MILES MT41U001_011 "BELT CREEK, headwaters to Big Otter Creek" Salinity 2006 B-1 5 10030105 Belt Upper Missouri Upper Missouri Belt Low RIVER 50.77 MILES MT41U001_011 "BELT CREEK, headwaters to Big Otter Creek" Sedimentation/Siltation 1988 B-1 5 10030105 Belt Upper Missouri Upper Missouri Belt Low RIVER 50.77 MILES MT41U001_012 "BELT CREEK, Big Otter Creek to mouth (Missouri River)" Aluminum 2016 B-2 5 10030105 Belt Upper Missouri Upper Missouri Belt Low RIVER 39.44 MILES MT41U001_012 "BELT CREEK, Big Otter Creek to mouth (Missouri River)" Sedimentation/Siltation 1988 B-2 5 10030105 Belt Upper Missouri Upper Missouri Belt Low RIVER 39.44 MILES MT41U002_010 "CARPENTER CREEK, headwaters to mouth (Belt Creek)" Mercury 1988 B-1 5 10030105 Belt Upper Missouri Upper Missouri Belt Low RIVER 6.05 MILES MT41U002_030 "DRY FORK BELT CREEK, headwaters to mouth (Belt Creek)" Sedimentation/Siltation 2000 B-1 5 10030105 Belt Upper Missouri Upper Missouri Belt Low RIVER 18.88 MILES MT41U002_040 "LITTLE BELT CREEK, three miles upstream to mouth (Belt Creek)" "Nitrogen, Total" 1988 B-1 5 10030105 Belt Upper Missouri Upper Missouri Belt Low RIVER 3.24 MILES MT41U002_040 "LITTLE BELT CREEK, three miles upstream to mouth (Belt Creek)" "Phosphorus, Total" 1988 B-1 5 10030105 Belt Upper Missouri Upper Missouri Belt Low RIVER 3.24 MILES MT41U002_040 "LITTLE BELT CREEK, three miles upstream to mouth (Belt Creek)" Sedimentation/Siltation 1988 B-1 5 10030105 Belt Upper Missouri Upper Missouri Belt Low RIVER 3.24 MILES MT41U002_050 "BIG OTTER CREEK, headwaters to mouth (Belt Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 B-1 5 10030105 Belt Upper Missouri Upper Missouri Belt Low RIVER 33.49 MILES MT41U002_050 "BIG OTTER CREEK, headwaters to mouth (Belt Creek)" Sedimentation/Siltation 1996 B-1 5 10030105 Belt Upper Missouri Upper Missouri Belt Low RIVER 33.49 MILES MT42B001_010 "TONGUE RIVER, Wyoming border to Tongue River Reservoir" Iron 2008 B-2 5 10090101 Upper Tongue Tongue Yellowstone Tongue Low RIVER 5.9 MILES MT42B002_031 "HANGING WOMAN CREEK, Stroud Creek to mouth (Tongue River)" Iron 1996 C-3 "5,5N" 10090101 Upper Tongue Tongue Yellowstone Tongue Low RIVER 18.27 MILES MT42B002_031 "HANGING WOMAN CREEK, Stroud Creek to mouth (Tongue River)" Salinity 2008 C-3 "5,5N" 10090101 Upper Tongue Tongue Yellowstone Tongue Low RIVER 18.27 MILES MT42B002_031 "HANGING WOMAN CREEK, Stroud Creek to mouth (Tongue River)" Sedimentation/Siltation 2000 C-3 "5,5N" 10090101 Upper Tongue Tongue Yellowstone Tongue Low RIVER 18.27 MILES MT42B002_032 "HANGING WOMAN CREEK, Wyoming border to Stroud Creek" Salinity 1996 C-3 "5,5N" 10090101 Upper Tongue Tongue Yellowstone Tongue Low RIVER 31.37 MILES MT42B003_010 TONGUE RIVER RESERVOIR Dissolved Oxygen 2008 B-2 5 10090101 Upper Tongue Tongue Yellowstone Tongue Low FRESHWATER LAKE "2,158.50" ACRES MT42B003_010 TONGUE RIVER RESERVOIR Sediment 2008 B-2 5 10090101 Upper Tongue Tongue Yellowstone Tongue Low FRESHWATER LAKE "2,158.50" ACRES MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" Cadmium 2008 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 20.9 MILES MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" Copper 2008 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 20.9 MILES MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" Iron 2008 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 20.9 MILES MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" Lead 2008 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 20.9 MILES MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" Nickel 2008 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 20.9 MILES MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" Salinity 2008 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 20.9 MILES MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" Sediment 2008 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 20.9 MILES MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" Zinc 2008 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 20.9 MILES MT42C001_013 "TONGUE RIVER, Hanging Woman Creek to Beaver Creek" Iron 1996 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 74.97 MILES MT42C001_013 "TONGUE RIVER, Hanging Woman Creek to Beaver Creek" Sediment 1996 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 74.97 MILES MT42C001_014 "TONGUE RIVER, Beaver Creek to Twelve Mile Dam, T6N R48E S29" Iron 1996 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 72 MILES MT42C001_014 "TONGUE RIVER, Beaver Creek to Twelve Mile Dam, T6N R48E S29" Sediment 1996 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 72 MILES MT42C001_014 "TONGUE RIVER, Beaver Creek to Twelve Mile Dam, T6N R48E S29" Specific Conductivity 2020 B-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue High RIVER 72 MILES MT42C002_020 "OTTER CREEK, headwaters to mouth (Tongue River)" Iron 1996 C-3 "5,5N" 10090102 Lower Tongue Tongue Yellowstone Tongue Medium RIVER 108.1 MILES MT42C002_020 "OTTER CREEK, headwaters to mouth (Tongue River)" Salinity 1996 C-3 "5,5N" 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 108.1 MILES MT42C002_061 "PUMPKIN CREEK, headwaters to Little Pumpkin Creek" Salinity 1996 C-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 87.68 MILES MT42C002_061 "PUMPKIN CREEK, headwaters to Little Pumpkin Creek" Temperature 1996 C-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 87.68 MILES MT42C002_062 "PUMPKIN CREEK, Little Pumpkin Creek to the mouth (Tongue River)" Salinity 1996 C-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 92.19 MILES MT42C002_062 "PUMPKIN CREEK, Little Pumpkin Creek to the mouth (Tongue River)" Temperature 1996 C-3 5 10090102 Lower Tongue Tongue Yellowstone Tongue Low RIVER 92.19 MILES MT42I001_010 "LITTLE POWDER RIVER, Wyoming border to mouth (Powder River)" Salinity 1996 C-3 5 10090208 Little Powder Powder Yellowstone Powder Low RIVER 63.31 MILES MT42J001_010 "POWDER RIVER, Wyoming border to Little Powder River" Salinity 2008 C-3 5 10090207 Middle Powder Powder Yellowstone Powder Low RIVER 78.21 MILES MT42J003_011 "POWDER RIVER, Little Powder River to Mizpah Creek" Salinity 1996 C-3 5 10090209 Lower Powder Powder Yellowstone Powder Low RIVER 99 MILES MT42J003_012 "POWDER RIVER, Mizpah Creek to mouth (Yellowstone River)" Salinity 1996 C-3 5 10090209 Lower Powder Powder Yellowstone Powder Low RIVER 45.33 MILES MT42J004_010 "STUMP CREEK, headwaters to mouth (Powder River)" Salinity 2008 C-3 "5,5N" 10090209 Lower Powder Powder Yellowstone Powder Low RIVER 29.77 MILES MT42J005_011 "MIZPAH CREEK, headwaters to Corral Creek" Salinity 2008 C-3 5 10090210 Mizpah Powder Yellowstone Powder Low RIVER 131.98 MILES MT42J005_012 "MIZPAH CREEK, Corral Creek to the mouth (Powder River)" Salinity 2010 C-3 5 10090210 Mizpah Powder Yellowstone Powder Low RIVER 22.98 MILES MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" Copper 1992 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Yellowstone River Low RIVER 88.73 MILES MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" Lead 1992 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Yellowstone River Low RIVER 88.73 MILES MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Yellowstone River Medium RIVER 88.73 MILES MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" pH 1990 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Yellowstone River Low RIVER 88.73 MILES MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" Sediment 1990 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Yellowstone River Low RIVER 88.73 MILES MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" Total Dissolved Solids (TDS) 1990 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Yellowstone River Low RIVER 88.73 MILES MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" Zinc 1992 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Yellowstone River Low RIVER 88.73 MILES MT42K002_020 "HARRIS CREEK, headwaters to mouth (Yellowstone River)" "Phosphorus, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 27.39 MILES MT42K002_020 "HARRIS CREEK, headwaters to mouth (Yellowstone River)" Sediment 1992 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 27.39 MILES MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" Copper 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 15.28 MILES MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" Iron 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 15.28 MILES MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" Lead 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 15.28 MILES MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 15.28 MILES MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" "Nitrogen, Total" 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 15.28 MILES MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" "Phosphorus, Total" 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 15.28 MILES MT42K002_040 "MUSTER CREEK, headwaters to mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1992 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 31.39 MILES MT42K002_040 "MUSTER CREEK, headwaters to mouth (Yellowstone River)" "Phosphorus, Total" 1992 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 31.39 MILES MT42K002_040 "MUSTER CREEK, headwaters to mouth (Yellowstone River)" Sediment 1992 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 31.39 MILES MT42K002_060 "DEADMAN CREEK, headwaters to mouth (North Fork Sunday Creek)" "Nitrogen, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 17.28 MILES MT42K002_060 "DEADMAN CREEK, headwaters to mouth (North Fork Sunday Creek)" "Phosphorus, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 17.28 MILES MT42K002_070 "STELLAR CREEK, headwaters to mouth (Little Porcupine Creek)" Cadmium 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 42.96 MILES MT42K002_070 "STELLAR CREEK, headwaters to mouth (Little Porcupine Creek)" pH 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 42.96 MILES MT42K002_070 "STELLAR CREEK, headwaters to mouth (Little Porcupine Creek)" "Phosphorus, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 42.96 MILES MT42K002_080 "NORTH FORK SUNDAY CREEK, Custer/Rosebud County border to mouth (Sunday Creek)" Sedimentation/Siltation 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 33.76 MILES MT42K002_080 "NORTH FORK SUNDAY CREEK, Custer/Rosebud County border to mouth (Sunday Creek)" Sodium 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 33.76 MILES MT42K002_080 "NORTH FORK SUNDAY CREEK, Custer/Rosebud County border to mouth (Sunday Creek)" Specific Conductivity 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 33.76 MILES MT42K002_080 "NORTH FORK SUNDAY CREEK, Custer/Rosebud County border to mouth (Sunday Creek)" Total Dissolved Solids (TDS) 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 33.76 MILES MT42K002_090 "SARPY CREEK, Crow Indian Reservation Boundary to mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 89.35 MILES MT42K002_090 "SARPY CREEK, Crow Indian Reservation Boundary to mouth (Yellowstone River)" "Nitrogen, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 89.35 MILES MT42K002_090 "SARPY CREEK, Crow Indian Reservation Boundary to mouth (Yellowstone River)" "Phosphorus, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 89.35 MILES MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" Aluminum 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 35.38 MILES MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" Iron 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 35.38 MILES MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 35.38 MILES MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" "Nitrogen, Total" 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 35.38 MILES MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" "Phosphorus, Total" 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 35.38 MILES MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" Specific Conductivity 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 35.38 MILES MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" Total Dissolved Solids (TDS) 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 35.38 MILES MT42K002_120 "WEST FORK ARMELLS CREEK, headwaters to mouth (Armells Creek)" Aluminum 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 33.99 MILES MT42K002_120 "WEST FORK ARMELLS CREEK, headwaters to mouth (Armells Creek)" Iron 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 33.99 MILES MT42K002_160 "LITTLE PORCUPINE CREEK, headwaters to mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 118.8 MILES MT42K002_160 "LITTLE PORCUPINE CREEK, headwaters to mouth (Yellowstone River)" "Nitrogen, Total" 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 118.8 MILES MT42K002_160 "LITTLE PORCUPINE CREEK, headwaters to mouth (Yellowstone River)" "Phosphorus, Total" 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 118.8 MILES MT42K002_160 "LITTLE PORCUPINE CREEK, headwaters to mouth (Yellowstone River)" Total Dissolved Solids (TDS) 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 118.8 MILES MT42K002_180 "ARMELLS CREEK, confluence of East and West Forks to mouth (Yellowstone River)" Aluminum 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 28.76 MILES MT42K002_180 "ARMELLS CREEK, confluence of East and West Forks to mouth (Yellowstone River)" Iron 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone Middle Yellowstone Tributaries Low RIVER 28.76 MILES MT42L001_010 "PENNEL CREEK, headwaters to mouth (O'Fallon Creek)" Total Dissolved Solids (TDS) 1988 C-3 5 10100005 O'Fallon Lower Yellowstone Yellowstone O'Fallon Low RIVER 65.97 MILES MT42L001_020 "SANDSTONE CREEK, headwaters to mouth (O'Fallon Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100005 O'Fallon Lower Yellowstone Yellowstone O'Fallon Low RIVER 72.78 MILES MT42L001_020 "SANDSTONE CREEK, headwaters to mouth (O'Fallon Creek)" "Nitrogen, Total" 2006 C-3 5 10100005 O'Fallon Lower Yellowstone Yellowstone O'Fallon Low RIVER 72.78 MILES MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" "Chromium, Total" 1992 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Yellowstone River Low RIVER 53.67 MILES MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" Copper 1992 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Yellowstone River Low RIVER 53.67 MILES MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" Lead 1992 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Yellowstone River Low RIVER 53.67 MILES MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" "Nitrogen, Total" 1990 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Yellowstone River Medium RIVER 53.67 MILES MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" pH 1990 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Yellowstone River Low RIVER 53.67 MILES MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" "Phosphorus, Total" 1990 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Yellowstone River Medium RIVER 53.67 MILES MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" Sedimentation/Siltation 1988 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Yellowstone River Low RIVER 53.67 MILES MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" Total Dissolved Solids (TDS) 1988 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Yellowstone River Low RIVER 53.67 MILES MT42M002_020 "FOURMILE CREEK, headwaters to North Dakota border" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 29.74 MILES MT42M002_020 "FOURMILE CREEK, headwaters to North Dakota border" "Nitrogen, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 29.74 MILES MT42M002_020 "FOURMILE CREEK, headwaters to North Dakota border" Total Dissolved Solids (TDS) 1988 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 29.74 MILES MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" Copper 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 33.37 MILES MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 33.37 MILES MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" Lead 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 33.37 MILES MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 33.37 MILES MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" "Nitrogen, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 33.37 MILES MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" "Phosphorus, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 33.37 MILES MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" Sediment 1988 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 33.37 MILES MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" Total Dissolved Solids (TDS) 1988 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 33.37 MILES MT42M002_040 "LONE TREE CREEK, confluence of North Fork to mouth (Yellowstone River)" Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 17.27 MILES MT42M002_040 "LONE TREE CREEK, confluence of North Fork to mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 17.27 MILES MT42M002_040 "LONE TREE CREEK, confluence of North Fork to mouth (Yellowstone River)" Sediment 1988 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 17.27 MILES MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" Arsenic 1994 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 49.85 MILES MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" Iron 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 49.85 MILES MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" Lead 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 49.85 MILES MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" Mercury 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 49.85 MILES MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" "Nitrogen, Total" 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 49.85 MILES MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" "Phosphorus, Total" 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 49.85 MILES MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" Sediment 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 49.85 MILES MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" Sulfate 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 49.85 MILES MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" Total Dissolved Solids (TDS) 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 49.85 MILES MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" Arsenic 1994 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.32 MILES MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" Iron 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.32 MILES MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" Lead 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.32 MILES MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" Mercury 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.32 MILES MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" "Nitrogen, Total" 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.32 MILES MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" "Phosphorus, Total" 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.32 MILES MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" Sediment 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.32 MILES MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" Sulfate 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.32 MILES MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" Total Dissolved Solids (TDS) 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.32 MILES MT42M002_060 "O'BRIEN CREEK, North Dakota border to mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 15.53 MILES MT42M002_060 "O'BRIEN CREEK, North Dakota border to mouth (Yellowstone River)" Selenium 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 15.53 MILES MT42M002_070 "CRANE CREEK, headwaters to mouth (Yellowstone River, T21N R58E S23)" Sedimentation/Siltation 1988 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 24.25 MILES MT42M002_100 "COTTONWOOD CREEK, headwaters to mouth (Yellowstone River)" Cadmium 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 21.99 MILES MT42M002_100 "COTTONWOOD CREEK, headwaters to mouth (Yellowstone River)" Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 21.99 MILES MT42M002_110 "BURNS CREEK, headwaters to mouth (Yellowstone River)" Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 53.66 MILES MT42M002_110 "BURNS CREEK, headwaters to mouth (Yellowstone River)" "Nitrogen, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 53.66 MILES MT42M002_110 "BURNS CREEK, headwaters to mouth (Yellowstone River)" "Phosphorus, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 53.66 MILES MT42M002_110 "BURNS CREEK, headwaters to mouth (Yellowstone River)" Sediment 1992 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 53.66 MILES MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" Cadmium 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 55.89 MILES MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" "Chromium, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 55.89 MILES MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" Copper 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 55.89 MILES MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 55.89 MILES MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" Lead 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 55.89 MILES MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" Nickel 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 55.89 MILES MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" Sediment 1990 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 55.89 MILES MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" Selenium 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 55.89 MILES MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" Zinc 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 55.89 MILES MT42M002_141 "CEDAR CREEK, 26 miles upstream to mouth (Yellowstone River)" Arsenic 2000 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 27.49 MILES MT42M002_141 "CEDAR CREEK, 26 miles upstream to mouth (Yellowstone River)" Copper 2000 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 27.49 MILES MT42M002_141 "CEDAR CREEK, 26 miles upstream to mouth (Yellowstone River)" Iron 2000 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 27.49 MILES MT42M002_141 "CEDAR CREEK, 26 miles upstream to mouth (Yellowstone River)" Lead 2000 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 27.49 MILES MT42M002_142 "CEDAR CREEK, tributary confluence at 12N 57E S35 to tributary confluence at 13N 56E S27" Copper 2006 C-3 "5,5N" 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.13 MILES MT42M002_142 "CEDAR CREEK, tributary confluence at 12N 57E S35 to tributary confluence at 13N 56E S27" Iron 2006 C-3 "5,5N" 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.13 MILES MT42M002_142 "CEDAR CREEK, tributary confluence at 12N 57E S35 to tributary confluence at 13N 56E S27" Lead 2006 C-3 "5,5N" 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.13 MILES MT42M002_142 "CEDAR CREEK, tributary confluence at 12N 57E S35 to tributary confluence at 13N 56E S27" Selenium 2006 C-3 "5,5N" 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 20.13 MILES MT42M002_150 "CABIN CREEK, headwaters to mouth (Yellowstone River)" Dissolved Oxygen 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 102.54 MILES MT42M002_150 "CABIN CREEK, headwaters to mouth (Yellowstone River)" "Nitrogen, Total" 1990 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 102.54 MILES MT42M002_150 "CABIN CREEK, headwaters to mouth (Yellowstone River)" Sedimentation/Siltation 1994 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 102.54 MILES MT42M002_180 "SEARS CREEK, headwaters to mouth (Yellowstone River)" Copper 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 15.15 MILES MT42M002_180 "SEARS CREEK, headwaters to mouth (Yellowstone River)" Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 15.15 MILES MT42M002_180 "SEARS CREEK, headwaters to mouth (Yellowstone River)" Lead 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 15.15 MILES MT42M002_180 "SEARS CREEK, headwaters to mouth (Yellowstone River)" Sediment 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone Lower Yellowstone Low RIVER 15.15 MILES MT43A002_020 "ANTELOPE CREEK, headwaters to mouth (Shields River)" Sediment 1992 B-1 5 10070003 Shields Upper Yellowstone Yellowstone Shields Low RIVER 10.37 MILES MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" "Ammonia, Total" 1990 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Yellowstone River Low RIVER 4.79 MILES MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" Arsenic 1992 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Yellowstone River Low RIVER 4.79 MILES MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" Copper 1992 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Yellowstone River Low RIVER 4.79 MILES MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" Lead 1992 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Yellowstone River Low RIVER 4.79 MILES MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Yellowstone River Medium RIVER 4.79 MILES MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" Sedimentation/Siltation 1990 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Yellowstone River Low RIVER 4.79 MILES MT43B001_011 "YELLOWSTONE RIVER, Wyoming border to Yellowstone National Park Boundary" "Ammonia, Un-ionized" 2006 A-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Yellowstone River Low RIVER 8.68 MILES MT43B001_011 "YELLOWSTONE RIVER, Wyoming border to Yellowstone National Park Boundary" Arsenic 1992 A-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Yellowstone River Low RIVER 8.68 MILES MT43B001_011 "YELLOWSTONE RIVER, Wyoming border to Yellowstone National Park Boundary" Copper 1992 A-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Yellowstone River Low RIVER 8.68 MILES MT43B001_011 "YELLOWSTONE RIVER, Wyoming border to Yellowstone National Park Boundary" Nitrate/Nitrite (Nitrite + Nitrate as N) 1988 A-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Yellowstone River Medium RIVER 8.68 MILES MT43B001_011 "YELLOWSTONE RIVER, Wyoming border to Yellowstone National Park Boundary" Sedimentation/Siltation 1988 A-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Yellowstone River Low RIVER 8.68 MILES MT43B002_021 "BEAR CREEK, 1/2 mile below Jardine Mine to mouth (Yellowstone River)" Temperature 2002 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone Paradise Low RIVER 3.03 MILES MT43B004_012 "OTTER CREEK, headwaters to 2 mi downstream of Highway 191 bridge" Sedimentation/Siltation 1996 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 24.5 MILES MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" Arsenic 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 26.75 MILES MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" Cadmium 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 26.75 MILES MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" Copper 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 26.75 MILES MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" Iron 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 26.75 MILES MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" Lead 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 26.75 MILES MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" Manganese 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 26.75 MILES MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" Nickel 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 26.75 MILES MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" Sedimentation/Siltation 1992 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 26.75 MILES MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" Selenium 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 26.75 MILES MT43B004_042 "UPPER DEER CREEK, headwaters to Cartwright Gulch" Sediment 1996 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 16.63 MILES MT43B004_051 "BILLMAN CREEK, 1.3 miles upstream to mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Paradise Low RIVER 1.37 MILES MT43B004_051 "BILLMAN CREEK, 1.3 miles upstream to mouth (Yellowstone River)" Sedimentation/Siltation 1992 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Paradise Low RIVER 1.37 MILES MT43B004_052 "BILLMAN CREEK, headwaters to 1.3 miles above mouth (Yellowstone River)" Combined Biota/Habitat Bioassessments 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Paradise Low RIVER 13.44 MILES MT43B004_052 "BILLMAN CREEK, headwaters to 1.3 miles above mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Paradise Low RIVER 13.44 MILES MT43B004_052 "BILLMAN CREEK, headwaters to 1.3 miles above mouth (Yellowstone River)" Sedimentation/Siltation 1992 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Paradise Low RIVER 13.44 MILES MT43B004_061 "TOM MINER CREEK, Tepee Creek to mouth (Yellowstone River)" Temperature 2002 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Paradise Low RIVER 0.73 MILES MT43B004_102 "SIX MILE CREEK, Absaroka-Beartooth Wilderness boundary to National Forest boundary" Sedimentation/Siltation 2000 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Paradise Low RIVER 2.54 MILES MT43B004_131 "BOULDER RIVER, Clayton Ditch to mouth (Yellowstone River)" Silver 2004 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Boulder - Big Timber Low RIVER 5.51 MILES MT43B004_132 "BOULDER RIVER, Natural Bridge and Falls (T3S R12E S26) to Clayton Ditch (T1N R14E S34)" "Chromium, Total" 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Boulder - Big Timber Low RIVER 27.84 MILES MT43B004_132 "BOULDER RIVER, Natural Bridge and Falls (T3S R12E S26) to Clayton Ditch (T1N R14E S34)" Nickel 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Boulder - Big Timber Low RIVER 27.84 MILES MT43B004_132 "BOULDER RIVER, Natural Bridge and Falls (T3S R12E S26) to Clayton Ditch (T1N R14E S34)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Boulder - Big Timber Low RIVER 27.84 MILES MT43B004_132 "BOULDER RIVER, Natural Bridge and Falls (T3S R12E S26) to Clayton Ditch (T1N R14E S34)" "Nitrogen, Total" 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Boulder - Big Timber Low RIVER 27.84 MILES MT43B004_133 "BOULDER RIVER, confluence of the East Fork Boulder River to Natural bridge and Falls (T35 R12E S26)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Boulder - Big Timber Low RIVER 24.1 MILES MT43B004_133 "BOULDER RIVER, confluence of the East Fork Boulder River to Natural bridge and Falls (T35 R12E S26)" "Nitrogen, Total" 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Boulder - Big Timber Low RIVER 24.1 MILES MT43B004_133 "BOULDER RIVER, confluence of the East Fork Boulder River to Natural bridge and Falls (T35 R12E S26)" "Phosphorus, Total" 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Boulder - Big Timber Low RIVER 24.1 MILES MT43B004_141 "EAST BOULDER RIVER, Elk Creek to mouth (Boulder River)" Sedimentation/Siltation 2000 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone Boulder - Big Timber Low RIVER 3.14 MILES MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" Cadmium 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 45.59 MILES MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" "Chromium, Total" 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 45.59 MILES MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" Copper 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 45.59 MILES MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" Cyanide 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 45.59 MILES MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" Mercury 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 45.59 MILES MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" Nickel 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 45.59 MILES MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 45.59 MILES MT43C002_010 "LODGEPOLE CREEK, headwaters to mouth (Castle Creek)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 5.91 MILES MT43C002_030 "CASTLE CREEK, headwaters to the mouth (Limestone Creek), T4S R15E S29" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 8.29 MILES MT43C002_041 "GROVE CREEK, confluence of South Fork Grove Creek, T4S R18E S13 to the mouth (Stillwater River), T3S R18E S34" "Phosphorus, Total" 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 5.23 MILES MT43C002_041 "GROVE CREEK, confluence of South Fork Grove Creek, T4S R18E S13 to the mouth (Stillwater River), T3S R18E S34" Sedimentation/Siltation 1992 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 5.23 MILES MT43C002_050 "FISHTAIL CREEK, headwaters to mouth (West Rosebud Creek)" Iron 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 14.8 MILES MT43C002_050 "FISHTAIL CREEK, headwaters to mouth (West Rosebud Creek)" Lead 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 14.8 MILES MT43C002_070 "JOE HILL CREEK, headwaters to mouth (Stillwater River)" Sedimentation/Siltation 1992 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 13.16 MILES MT43C002_081 "BUTCHER CREEK, highway 78 to mouth (Rosebud Creek)" Sediment 1996 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 22.02 MILES MT43C002_082 "BUTCHER CREEK, headwaters to highway 78" "Phosphorus, Total" 1996 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 4.98 MILES MT43C002_082 "BUTCHER CREEK, headwaters to highway 78" Sedimentation/Siltation 1996 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 4.98 MILES MT43C002_090 "WEST ROSEBUD CREEK, Absaroka-Beartooth Wilderness boundary to mouth (Rosebud Creek)" Benthic Macroinvertebrates 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 31.77 MILES MT43C002_100 "ROSEBUD CREEK, East and West Branches to mouth (Stillwater River)" Benthic Macroinvertebrates 2006 B-1 5 10070005 Stillwater Upper Yellowstone Yellowstone Stillwater - Columbus Low RIVER 3.93 MILES MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" "Ammonia, Total" 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 43.32 MILES MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" Copper 1992 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 43.32 MILES MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" Iron 1992 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 43.32 MILES MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" Lead 1992 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 43.32 MILES MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" Mercury 1992 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 43.32 MILES MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 43.32 MILES MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" "Nitrogen, Total" 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 43.32 MILES MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" "Phosphorus, Total" 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 43.32 MILES MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" Sediment 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 43.32 MILES MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" Temperature 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 43.32 MILES MT43D002_010 "ELBOW CREEK, headwaters to mouth (Clarks Fork)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 "5,5N" 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 38.57 MILES MT43D002_010 "ELBOW CREEK, headwaters to mouth (Clarks Fork)" "Nitrogen, Total" 2006 B-1 "5,5N" 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 38.57 MILES MT43D002_010 "ELBOW CREEK, headwaters to mouth (Clarks Fork)" Sedimentation/Siltation 1990 B-1 "5,5N" 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 38.57 MILES MT43D002_020 "BEAR CREEK, headwaters to mouth (Clarks Fork)" Iron 1988 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.14 MILES MT43D002_020 "BEAR CREEK, headwaters to mouth (Clarks Fork)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.14 MILES MT43D002_020 "BEAR CREEK, headwaters to mouth (Clarks Fork)" "Phosphorus, Total" 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.14 MILES MT43D002_020 "BEAR CREEK, headwaters to mouth (Clarks Fork)" Sedimentation/Siltation 1988 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.14 MILES MT43D002_031 "BLUEWATER CREEK, unnamed tributary at T6N R24E S7 NWNE to mouth (Clarks Fork Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 11.41 MILES MT43D002_031 "BLUEWATER CREEK, unnamed tributary at T6N R24E S7 NWNE to mouth (Clarks Fork Yellowstone River)" "Phosphorus, Total" 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 11.41 MILES MT43D002_031 "BLUEWATER CREEK, unnamed tributary at T6N R24E S7 NWNE to mouth (Clarks Fork Yellowstone River)" Sedimentation/Siltation 1988 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 11.41 MILES MT43D002_060 "RED LODGE CREEK, Cooney Reservoir to mouth (Rock Creek)" Organic Enrichment 2000 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 12.07 MILES MT43D002_070 "WILLOW CREEK, headwaters to mouth (Cooney Reservoir)" Sedimentation/Siltation 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 36.46 MILES MT43D002_080 "WEST RED LODGE CREEK, Absaroka-Beartooth Wilderness boundary to mouth (Red Lodge Creek)" Sedimentation/Siltation 1992 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 14.39 MILES MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" Dissolved Oxygen 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.77 MILES MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" "Nitrogen, Total" 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.77 MILES MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" "Phosphorus, Total" 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.77 MILES MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems) 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.77 MILES MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" Sediment 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.77 MILES MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" Specific Conductivity 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.77 MILES MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" Temperature 1996 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.77 MILES MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" Total Dissolved Solids (TDS) 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.77 MILES MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" Turbidity 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 21.77 MILES MT43D002_140 "COTTONWOOD CREEK, headwaters to the mouth (Clarks Fork of Yellowstone), T3S R24E S24" Dissolved Oxygen 2006 B-1 "5,5N" 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 19.57 MILES MT43D002_140 "COTTONWOOD CREEK, headwaters to the mouth (Clarks Fork of Yellowstone), T3S R24E S24" Sediment 1992 B-1 "5,5N" 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 19.57 MILES MT43D002_180 "SOUTH FORK BRIDGER CREEK, Headwaters to mouth (Bridger Creek)" Arsenic 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 9.39 MILES MT43D002_180 "SOUTH FORK BRIDGER CREEK, Headwaters to mouth (Bridger Creek)" Iron 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 9.39 MILES MT43D002_180 "SOUTH FORK BRIDGER CREEK, Headwaters to mouth (Bridger Creek)" Sedimentation/Siltation 1994 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Yellowstone Clarks Fork Yellowstone Low RIVER 9.39 MILES MT43E001_010 "PRYOR CREEK, Interstate 90 bridge to mouth (Yellowstone River)" Benthic Macroinvertebrates 2006 C-3 5 10070008 Pryor Upper Yellowstone Yellowstone Yellowstone - Lower Bighorn Low RIVER 14.98 MILES MT43E001_011 "PRYOR CREEK, Crow Reservation Boundary to Interstate 90 bridge" Sedimentation/Siltation 1990 B-1 5 10070008 Pryor Upper Yellowstone Yellowstone Yellowstone - Lower Bighorn Low RIVER 2.88 MILES MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" Arsenic 2008 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone River Low RIVER 10.62 MILES MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" Benthic Macroinvertebrates 2008 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone River Low RIVER 10.62 MILES MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" Dissolved Oxygen 2008 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone River Medium RIVER 10.62 MILES MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" Eutrophication 2008 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone River Medium RIVER 10.62 MILES MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" Oil and Grease 2012 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone River Low RIVER 10.62 MILES MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" Sediment 2008 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone River Low RIVER 10.62 MILES MT43F001_011 "YELLOWSTONE RIVER, City of Laurel PWS to City of Billings PWS" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-2 5 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone Yellowstone River Medium RIVER 19.4 MILES MT43F001_011 "YELLOWSTONE RIVER, City of Laurel PWS to City of Billings PWS" Oil and Grease 2012 B-2 5 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone Yellowstone River Low RIVER 19.4 MILES MT43F002_010 "DUCK CREEK, headwaters to mouth (Yellowstone River)" Sedimentation/Siltation 1996 B-2 5 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 13.68 MILES MT43F002_022 "CANYON CREEK, headwaters to highway 532" Dissolved Oxygen 2006 B-2 "5,5N" 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 29.7 MILES MT43F002_022 "CANYON CREEK, headwaters to highway 532" Sedimentation/Siltation 2006 B-2 "5,5N" 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 29.7 MILES MT43F002_040 "VALLEY CREEK, headwaters to mouth (Yellowstone River)" Benthic Macroinvertebrates 2006 B-2 "5,5N" 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 14.75 MILES MT43F002_040 "VALLEY CREEK, headwaters to mouth (Yellowstone River)" Dissolved Oxygen 2006 B-2 "5,5N" 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 14.75 MILES MT43F002_040 "VALLEY CREEK, headwaters to mouth (Yellowstone River)" Sedimentation/Siltation 1992 B-2 "5,5N" 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone Yellowstone - Sweet Grass Low RIVER 14.75 MILES MT43F003_010 BIG LAKE Salinity 2000 B-2 5 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone Lake Basin - Spidel Low FRESHWATER LAKE "2,583.00" ACRES MT43F003_030 HALFBREED LAKE Salinity 2002 B-2 5 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone Lake Basin - Spidel Low FRESHWATER LAKE 211 ACRES MT43Q001_011 "YELLOWSTONE RIVER, Huntley Diversion Dam to mouth of Big Horn River" "Ammonia, Un-ionized" 1996 B-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone River Low RIVER 58.31 MILES MT43Q001_011 "YELLOWSTONE RIVER, Huntley Diversion Dam to mouth of Big Horn River" Oil and Grease 2012 B-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone River Low RIVER 58.31 MILES MT43Q001_011 "YELLOWSTONE RIVER, Huntley Diversion Dam to mouth of Big Horn River" Sedimentation/Siltation 1988 B-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone River Low RIVER 58.31 MILES MT43Q001_011 "YELLOWSTONE RIVER, Huntley Diversion Dam to mouth of Big Horn River" Total Dissolved Solids (TDS) 1988 B-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone River Low RIVER 58.31 MILES MT43Q002_010 "FLY CREEK, Crow Indian Reservation boundary to mouth (Yellowstone River)" Dissolved Oxygen 2006 C-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone - Lower Bighorn Low RIVER 55.68 MILES MT43Q002_010 "FLY CREEK, Crow Indian Reservation boundary to mouth (Yellowstone River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone - Lower Bighorn Low RIVER 55.68 MILES MT43Q002_010 "FLY CREEK, Crow Indian Reservation boundary to mouth (Yellowstone River)" "Nitrogen, Total" 2006 C-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Yellowstone - Lower Bighorn Low RIVER 55.68 MILES MT43Q003_010 SPIDEL WATERFOWL PRODUCTION AREA Salinity 2000 B-1 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Lake Basin - Spidel Low FRESHWATER LAKE 659.8 ACRES MT43Q003_010 SPIDEL WATERFOWL PRODUCTION AREA Selenium 2000 B-1 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone Lake Basin - Spidel Low FRESHWATER LAKE 659.8 ACRES MT43R001_010 "BIGHORN RIVER, Crow Indian Res. Boundary to mouth (Yellowstone River)" Lead 1996 B-2 5 10080015 Lower Bighorn Big Horn Yellowstone Yellowstone - Lower Bighorn Low RIVER 40.02 MILES MT43R001_010 "BIGHORN RIVER, Crow Indian Res. Boundary to mouth (Yellowstone River)" Mercury 1996 B-2 5 10080015 Lower Bighorn Big Horn Yellowstone Yellowstone - Lower Bighorn Low RIVER 40.02 MILES MT43R002_010 "TULLOCK CREEK, Crow Indian Reservation Boundary to mouth (Bighorn River)" Iron 1990 C-3 5 10080015 Lower Bighorn Big Horn Yellowstone Yellowstone - Lower Bighorn Low RIVER 58.83 MILES MT43R002_010 "TULLOCK CREEK, Crow Indian Reservation Boundary to mouth (Bighorn River)" "Nitrogen, Total" 1990 C-3 5 10080015 Lower Bighorn Big Horn Yellowstone Yellowstone - Lower Bighorn Low RIVER 58.83 MILES MT43R002_010 "TULLOCK CREEK, Crow Indian Reservation Boundary to mouth (Bighorn River)" "Phosphorus, Total" 1990 C-3 5 10080015 Lower Bighorn Big Horn Yellowstone Yellowstone - Lower Bighorn Low RIVER 58.83 MILES MT43R002_010 "TULLOCK CREEK, Crow Indian Reservation Boundary to mouth (Bighorn River)" Sedimentation/Siltation 1990 C-3 5 10080015 Lower Bighorn Big Horn Yellowstone Yellowstone - Lower Bighorn Low RIVER 58.83 MILES MT76A001_010 "KOOTENAI RIVER, confluence with Yaak River to Idaho border" Temperature 1992 B-1 5 17010104 Lower Kootenai Kootenai Columbia Kootenai Low RIVER 6.09 MILES MT76D001_010 "KOOTENAI RIVER, Libby Dam to Yaak River" Temperature 1990 B-1 5 17010101 Middle Kootenai Kootenai Columbia Kootenai Low RIVER 44.64 MILES MT76D003_010 LAKE KOOCANUSA Selenium 2012 B-1 5 17010101 Middle Kootenai Kootenai Columbia Kootenai Low FRESHWATER LAKE "28,874.50" ACRES MT76L001_010 "FLATHEAD RIVER, Flathead Reservation boundary to mouth (Clark Fork River)" Nitrate/Nitrite (Nitrite + Nitrate as N) 2010 B-1 5 17010212 Lower Flathead Pend Oreille Columbia Lower Flathead Low RIVER 4.24 MILES MT76L001_010 "FLATHEAD RIVER, Flathead Reservation boundary to mouth (Clark Fork River)" "Nitrogen, Total" 2010 B-1 5 17010212 Lower Flathead Pend Oreille Columbia Lower Flathead Low RIVER 4.24 MILES MT76L001_010 "FLATHEAD RIVER, Flathead Reservation boundary to mouth (Clark Fork River)" "Phosphorus, Total" 2010 B-1 5 17010212 Lower Flathead Pend Oreille Columbia Lower Flathead Low RIVER 4.24 MILES MT76L001_010 "FLATHEAD RIVER, Flathead Reservation boundary to mouth (Clark Fork River)" Sedimentation/Siltation 1990 B-1 5 17010212 Lower Flathead Pend Oreille Columbia Lower Flathead Low RIVER 4.24 MILES MT76L001_010 "FLATHEAD RIVER, Flathead Reservation boundary to mouth (Clark Fork River)" Temperature 1990 B-1 5 17010212 Lower Flathead Pend Oreille Columbia Lower Flathead Low RIVER 4.24 MILES MT76N001_010 "CLARK FORK RIVER, Flathead River to Thompson Falls Reservoir" Dissolved Gas Supersaturation 2014 B-1 5 17010213 Lower Clark Fork Pend Oreille Columbia Clark Fork River Low RIVER 36.3 MILES MT76N001_020 "CLARK FORK RIVER, Noxon Dam to Noxon Bridge" Dissolved Gas Supersaturation 2006 B-1 5 17010213 Lower Clark Fork Pend Oreille Columbia Clark Fork River Low RIVER 2.85 MILES MT76N001_020 "CLARK FORK RIVER, Noxon Dam to Noxon Bridge" Temperature 2006 B-1 5 17010213 Lower Clark Fork Pend Oreille Columbia Clark Fork River Low RIVER 2.85 MILES MT76O002_040 "SPRING CREEK, headwaters to mouth (Ashley Creek)" Arsenic 2006 B-1 5 17010208 Flathead Lake Pend Oreille Columbia Flathead - Stillwater Low RIVER 4.8 MILES MT76O003_010 FLATHEAD LAKE Mercury 2000 A-1 5 17010208 Flathead Lake Pend Oreille Columbia Flathead Lake Low FRESHWATER LAKE "57,305.00" ACRES MT76O003_010 FLATHEAD LAKE Polychlorinated Biphenyls (PCBs) 2000 A-1 5 17010208 Flathead Lake Pend Oreille Columbia Flathead Lake Low FRESHWATER LAKE "57,305.00" ACRES MT76P003_010 "WHITEFISH RIVER, Whitefish Lake to mouth (Stillwater River)" Oil and Grease 2000 B-2 5 17010210 Stillwater Pend Oreille Columbia Flathead - Stillwater Low RIVER 24.8 MILES MT76P003_010 "WHITEFISH RIVER, Whitefish Lake to mouth (Stillwater River)" Polychlorinated Biphenyls (PCBs) 2000 B-2 5 17010210 Stillwater Pend Oreille Columbia Flathead - Stillwater Low RIVER 24.8 MILES MT76P004_010 WHITEFISH LAKE Mercury 2000 A-1 5 17010210 Stillwater Pend Oreille Columbia Flathead - Stillwater Low FRESHWATER LAKE "3,317.40" ACRES MT76P004_010 WHITEFISH LAKE Polychlorinated Biphenyls (PCBs) 2000 A-1 5 17010210 Stillwater Pend Oreille Columbia Flathead - Stillwater Low FRESHWATER LAKE "3,317.40" ACRES