ID305B LOCATION_DESCRIPTION WATER_TYPE WATER_SIZE CAUSE_NAME CFL AU_USE_CLASS AU_CATEGORY HUC_8 HUC_NAME WATERSHED TMDL_PLANNING_AREA TMDL_PRIORITY MT39F001_010 "THOMPSON CREEK, Wyoming border to mouth (Little Missouri River)" RIVER 41.22 Cadmium 2006 C-3 "5,5N" 10110201 Upper Little Missouri Little Missouri/Belle Fourche Little Missouri Low MT39F001_010 "THOMPSON CREEK, Wyoming border to mouth (Little Missouri River)" RIVER 41.22 Copper 2006 C-3 "5,5N" 10110201 Upper Little Missouri Little Missouri/Belle Fourche Little Missouri Low MT39F001_010 "THOMPSON CREEK, Wyoming border to mouth (Little Missouri River)" RIVER 41.22 Iron 2006 C-3 "5,5N" 10110201 Upper Little Missouri Little Missouri/Belle Fourche Little Missouri Low MT39F001_010 "THOMPSON CREEK, Wyoming border to mouth (Little Missouri River)" RIVER 41.22 Zinc 2006 C-3 "5,5N" 10110201 Upper Little Missouri Little Missouri/Belle Fourche Little Missouri Low MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" RIVER 106.1 Cadmium 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Little Missouri Low MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" RIVER 106.1 Copper 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Little Missouri Low MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" RIVER 106.1 Iron 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Little Missouri Low MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" RIVER 106.1 Lead 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Little Missouri Low MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" RIVER 106.1 "Nitrogen, Total" 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Little Missouri Low MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" RIVER 106.1 "Phosphorus, Total" 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Little Missouri Low MT39F001_020 "LITTLE MISSOURI RIVER, Wyoming border to South Dakota border" RIVER 106.1 Zinc 2006 C-3 5 10110201 Upper Little Missouri Little Missouri/Belle Fourche Little Missouri Low MT40A001_010 "MUSSELSHELL RIVER, North & South Fork confluence to Deadmans Basin Diversion Canal" RIVER 55.3 Iron 2018 B-2 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A001_020 "MUSSELSHELL RIVER, Deadmans Basin Supply Canal to HUC boundary near Roundup" RIVER 94.49 Iron 2018 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A001_020 "MUSSELSHELL RIVER, Deadmans Basin Supply Canal to HUC boundary near Roundup" RIVER 94.49 Lead 2018 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A001_020 "MUSSELSHELL RIVER, Deadmans Basin Supply Canal to HUC boundary near Roundup" RIVER 94.49 Sediment 1998 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_012 "NORTH FORK MUSSELSHELL RIVER, Bair Reservoir to confluence with South Fork Musselshell River" RIVER 24.31 Iron 2018 B-1 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_012 "NORTH FORK MUSSELSHELL RIVER, Bair Reservoir to confluence with South Fork Musselshell River" RIVER 24.31 "Phosphorus, Total" 2018 B-1 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_030 "TRAIL CREEK, headwaters to mouth (North Fork Musselshell River)" RIVER 10.1 "Phosphorus, Total" 2018 B-1 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_030 "TRAIL CREEK, headwaters to mouth (North Fork Musselshell River)" RIVER 10.1 Sediment 2006 B-1 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_040 "MILL CREEK, headwaters to mouth (North Fork Musselshell River)" RIVER 4.81 Sediment 1992 B-1 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_050 "CARELESS CREEK, confluence with Swimming Woman Creek to mouth (Musselshell River)" RIVER 20.8 Iron 2018 C-3 5 10040201 Upper Musselshell Musselshell Careless Creek Low MT40A002_070 "FISH CREEK, headwaters to mouth (Musselshell River)" RIVER 98.64 Iron 2018 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_070 "FISH CREEK, headwaters to mouth (Musselshell River)" RIVER 98.64 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_080 "PAINTED ROBE CREEK, headwaters to mouth (Musselshell River)" RIVER 40.92 "Nitrogen, Total" 1994 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_080 "PAINTED ROBE CREEK, headwaters to mouth (Musselshell River)" RIVER 40.92 Salinity 1994 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_080 "PAINTED ROBE CREEK, headwaters to mouth (Musselshell River)" RIVER 40.92 Sulfate 2018 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_090 "HALF BREED CREEK, headwaters to mouth (Musselshell River)" RIVER 18.19 Nitrate/Nitrite (Nitrite + Nitrate as N) 1992 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_110 "MILLER CREEK, confluence of East and West Forks Miller Creek to mouth (Little Elk Creek)" RIVER 12.04 Sediment 2018 B-1 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_130 "BIG COULEE CREEK, confluence of North and South Forks Big Coulee Creek to mouth (Musselshell River)" RIVER 59.52 Iron 2018 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_130 "BIG COULEE CREEK, confluence of North and South Forks Big Coulee Creek to mouth (Musselshell River)" RIVER 59.52 Nitrate/Nitrite (Nitrite + Nitrate as N) 2018 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_130 "BIG COULEE CREEK, confluence of North and South Forks Big Coulee Creek to mouth (Musselshell River)" RIVER 59.52 "Nitrogen, Total" 2018 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40A002_130 "BIG COULEE CREEK, confluence of North and South Forks Big Coulee Creek to mouth (Musselshell River)" RIVER 59.52 Selenium 2018 C-3 5 10040201 Upper Musselshell Musselshell Upper - Middle Musselshell Low MT40B001_021 "FLATWILLOW CREEK, headwaters to Highway 87 bridge" RIVER 40.11 Iron 2018 B-2 5 10040203 Flatwillow Musselshell Flatwillow - Box Elder Low MT40B001_021 "FLATWILLOW CREEK, headwaters to Highway 87 bridge" RIVER 40.11 Sediment 2000 B-2 5 10040203 Flatwillow Musselshell Flatwillow - Box Elder Low MT40B001_022 "FLATWILLOW CREEK, Highway 87 bridge to mouth (Musselshell River)" RIVER 99.88 Iron 2018 C-3 5 10040203 Flatwillow Musselshell Flatwillow - Box Elder Low MT40B001_022 "FLATWILLOW CREEK, Highway 87 bridge to mouth (Musselshell River)" RIVER 99.88 Selenium 2018 C-3 5 10040203 Flatwillow Musselshell Flatwillow - Box Elder Low MT40B001_040 "NORTH FORK FLATWILLOW CREEK, headwaters to confluence with South Fork" RIVER 27.56 Sediment 2002 B-2 5 10040203 Flatwillow Musselshell Flatwillow - Box Elder Low MT40B002_001 "BOX ELDER CREEK, headwaters to mouth" RIVER 139.16 Iron 2018 C-3 5 10040204 Box Elder Musselshell Flatwillow - Box Elder Low MT40B002_010 "McDONALD CREEK, North and South Forks to mouth (Box Elder Creek)" RIVER 89.18 Iron 2018 C-3 5 10040204 Box Elder Musselshell Flatwillow - Box Elder Low MT40B002_010 "McDONALD CREEK, North and South Forks to mouth (Box Elder Creek)" RIVER 89.18 Salinity 2018 C-3 5 10040204 Box Elder Musselshell Flatwillow - Box Elder Low MT40B002_021 "FORDS CREEK, East Fork Fords Creek to mouth (Box Elder Creek)" RIVER 69.84 Iron 2018 C-3 5 10040204 Box Elder Musselshell Flatwillow - Box Elder Low MT40B002_070 "SOUTH FORK McDONALD CREEK, headwaters to confluence with North Fork McDonald Creek" RIVER 50.29 Iron 2018 C-3 5 10040204 Box Elder Musselshell Flatwillow - Box Elder Low MT40C001_010 "MUSSELSHELL RIVER, HUC boundary near Roundup to Flatwillow Creek" RIVER 114.6 Iron 2018 C-3 5 10040202 Middle Musselshell Musselshell Upper - Middle Musselshell Low MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" RIVER 117.27 Iron 2006 C-3 5 10040202 Middle Musselshell Musselshell Upper - Middle Musselshell Low MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" RIVER 117.27 "Nitrogen, Total" 2006 C-3 5 10040202 Middle Musselshell Musselshell Upper - Middle Musselshell Low MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" RIVER 117.27 "Phosphorus, Total" 2006 C-3 5 10040202 Middle Musselshell Musselshell Upper - Middle Musselshell Low MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" RIVER 117.27 Salinity 2018 C-3 5 10040202 Middle Musselshell Musselshell Upper - Middle Musselshell Low MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" RIVER 117.27 Sedimentation/Siltation 1994 C-3 5 10040202 Middle Musselshell Musselshell Upper - Middle Musselshell Low MT40C002_010 "NORTH WILLOW CREEK, headwaters to mouth (Musselshell River)" RIVER 117.27 Sulfate 2006 C-3 5 10040202 Middle Musselshell Musselshell Upper - Middle Musselshell Low MT40C003_010 "MUSSELSHELL RIVER, Flatwillow Creek to Fort Peck Reservoir" RIVER 75.94 Iron 2018 C-3 5 10040205 Lower Musselshell Musselshell Lower Musselshell Low MT40D001_010 "BIG DRY CREEK, Steves Fork to mouth (Fort Peck Reservoir)" RIVER 98.62 "Ammonia, Un-ionized" 2000 C-3 5 10040105 Big Dry Fort Peck Lake Big and Little Dry Low MT40D001_010 "BIG DRY CREEK, Steves Fork to mouth (Fort Peck Reservoir)" RIVER 98.62 Nitrate/Nitrite (Nitrite + Nitrate as N) 1994 C-3 5 10040105 Big Dry Fort Peck Lake Big and Little Dry Low MT40D001_010 "BIG DRY CREEK, Steves Fork to mouth (Fort Peck Reservoir)" RIVER 98.62 "Nitrogen, Total" 1994 C-3 5 10040105 Big Dry Fort Peck Lake Big and Little Dry Low MT40D001_010 "BIG DRY CREEK, Steves Fork to mouth (Fort Peck Reservoir)" RIVER 98.62 "Phosphorus, Total" 1994 C-3 5 10040105 Big Dry Fort Peck Lake Big and Little Dry Low MT40E001_010 "MISSOURI RIVER, Bullwhacker Creek to Fort Peck Reservoir" RIVER 49.02 Arsenic 1990 B-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Missouri River Low MT40E001_010 "MISSOURI RIVER, Bullwhacker Creek to Fort Peck Reservoir" RIVER 49.02 Copper 2000 B-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Missouri River Low MT40E002_070 "RUBY GULCH, headwaters to confluence of Alder Gulch, T25N R25E S21" RIVER 2.91 Arsenic 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Landusky Low MT40E002_090 "ROCK CREEK, headwaters to mouth (Missouri River)" RIVER 39.19 Escherichia coli (E. Coli) 2000 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Landusky Low MT40E002_100 "MILL GULCH, headwaters to mouth (Rock Creek)" RIVER 1.74 Arsenic 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Landusky Low MT40E002_100 "MILL GULCH, headwaters to mouth (Rock Creek)" RIVER 1.74 Cadmium 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Landusky Low MT40E002_100 "MILL GULCH, headwaters to mouth (Rock Creek)" RIVER 1.74 Nitrate/Nitrite (Nitrite + Nitrate as N) 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Landusky Low MT40E002_100 "MILL GULCH, headwaters to mouth (Rock Creek)" RIVER 1.74 Zinc 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Landusky Low MT40E002_110 "SULLIVAN CREEK, headwaters to mouth (Rock Creek)" RIVER 0.85 Nickel 2014 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Landusky Low MT40E003_020 "NELSON CREEK, headwaters to mouth (Big Dry Creek arm of Fort Peck Res)" RIVER 36.37 Cadmium 2006 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Redwater Low MT40E003_020 "NELSON CREEK, headwaters to mouth (Big Dry Creek arm of Fort Peck Res)" RIVER 36.37 Copper 2006 C-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Redwater Low MT40E004_010 FORT PECK RESERVOIR FRESHWATER LAKE 233295.8 Lead 2000 B-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Missouri River Low MT40E004_010 FORT PECK RESERVOIR FRESHWATER LAKE 233295.8 Mercury 2000 B-3 5 10040104 Fort Peck Reservoir Fort Peck Lake Missouri River Low MT40F003_010 "MILK RIVER, Canada border to Fresno Reservoir" RIVER 39.66 Copper 2006 B-3 5 10050002 Upper Milk Milk Upper Milk Low MT40F003_010 "MILK RIVER, Canada border to Fresno Reservoir" RIVER 39.66 Iron 2006 B-3 5 10050002 Upper Milk Milk Upper Milk Low MT40F003_010 "MILK RIVER, Canada border to Fresno Reservoir" RIVER 39.66 Lead 2006 B-3 5 10050002 Upper Milk Milk Upper Milk Low MT40H001_010 "BIG SANDY CREEK, Lonesome Lake Coulee to mouth (Milk River)" RIVER 62.93 Mercury 2002 B-3 5 10050005 Big Sandy Milk Big Sandy - Sage Low MT40I001_020 "PEOPLES CREEK, headwaters to Fort Belknap Reservation boundary" RIVER 57.19 Mercury 2006 B-1 5 10050009 Peoples Milk Middle Milk and Tributaries Low MT40I001_020 "PEOPLES CREEK, headwaters to Fort Belknap Reservation boundary" RIVER 57.19 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10050009 Peoples Milk Middle Milk and Tributaries Low MT40I001_020 "PEOPLES CREEK, headwaters to Fort Belknap Reservation boundary" RIVER 57.19 "Phosphorus, Total" 2006 B-1 5 10050009 Peoples Milk Middle Milk and Tributaries Low MT40I001_020 "PEOPLES CREEK, headwaters to Fort Belknap Reservation boundary" RIVER 57.19 Temperature 1988 B-1 5 10050009 Peoples Milk Middle Milk and Tributaries Low MT40I001_040 "KING CREEK, headwaters to Fort Belknap Reservation boundary" RIVER 0.9 Lead 2014 B-1 5 10050009 Peoples Milk Landusky Low MT40J001_011 "MILK RIVER, Fresno Dam to Thirtymile Creek" RIVER 113.28 Mercury 2000 B-3 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J001_012 "MILK RIVER, Thirtymile Creek to Dodson Creek" RIVER 58.19 Mercury 2000 B-3 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J001_013 "MILK RIVER, Dodson Creek to Whitewater Creek" RIVER 102.75 Mercury 2000 B-3 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J001_020 "MILK RIVER, Whitewater Creek to Beaver Creek" RIVER 38.24 Iron 2000 B-3 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J001_020 "MILK RIVER, Whitewater Creek to Beaver Creek" RIVER 38.24 Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-3 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_010 "BEAVER CREEK, Beaver Creek Reservoir to mouth (Milk River)" RIVER 24.92 Iron 2006 B-1 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_010 "BEAVER CREEK, Beaver Creek Reservoir to mouth (Milk River)" RIVER 24.92 Lead 2006 B-1 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_010 "BEAVER CREEK, Beaver Creek Reservoir to mouth (Milk River)" RIVER 24.92 Mercury 2006 B-1 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_010 "BEAVER CREEK, Beaver Creek Reservoir to mouth (Milk River)" RIVER 24.92 Sedimentation/Siltation 1988 B-1 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_010 "BEAVER CREEK, Beaver Creek Reservoir to mouth (Milk River)" RIVER 24.92 Temperature 1988 B-1 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_020 "BULLHOOK CREEK, headwaters to the Bullhook Dam, T32N R16E S16" RIVER 24.9 Nitrate/Nitrite (Nitrite + Nitrate as N) 1988 B-3 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_020 "BULLHOOK CREEK, headwaters to the Bullhook Dam, T32N R16E S16" RIVER 24.9 Sedimentation/Siltation 1988 B-3 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_020 "BULLHOOK CREEK, headwaters to the Bullhook Dam, T32N R16E S16" RIVER 24.9 Temperature 1988 B-3 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_030 "LITTLE BOXELDER CREEK, headwaters to mouth (Milk River)" RIVER 50.17 Nitrate/Nitrite (Nitrite + Nitrate as N) 1988 B-1 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_030 "LITTLE BOXELDER CREEK, headwaters to mouth (Milk River)" RIVER 50.17 "Nitrogen, Total" 1988 B-1 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_030 "LITTLE BOXELDER CREEK, headwaters to mouth (Milk River)" RIVER 50.17 "Phosphorus, Total" 1988 B-1 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_030 "LITTLE BOXELDER CREEK, headwaters to mouth (Milk River)" RIVER 50.17 Sedimentation/Siltation 1988 B-1 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J002_030 "LITTLE BOXELDER CREEK, headwaters to mouth (Milk River)" RIVER 50.17 Temperature 1988 B-1 5 10050004 Middle Milk Milk Middle Milk and Tributaries Low MT40J003_010 "LODGE CREEK, Canadian border to mouth (Milk River)" RIVER 83.08 Dissolved Oxygen 1992 B-3 5 10050007 Lodge Milk Middle Milk and Tributaries Low MT40J003_010 "LODGE CREEK, Canadian border to mouth (Milk River)" RIVER 83.08 Mercury 2006 B-3 5 10050007 Lodge Milk Middle Milk and Tributaries Low MT40J003_010 "LODGE CREEK, Canadian border to mouth (Milk River)" RIVER 83.08 Nitrate/Nitrite (Nitrite + Nitrate as N) 1992 B-3 5 10050007 Lodge Milk Middle Milk and Tributaries Low MT40J003_010 "LODGE CREEK, Canadian border to mouth (Milk River)" RIVER 83.08 "Nitrogen, Total" 1992 B-3 5 10050007 Lodge Milk Middle Milk and Tributaries Low MT40J003_010 "LODGE CREEK, Canadian border to mouth (Milk River)" RIVER 83.08 "Phosphorus, Total" 1992 B-3 5 10050007 Lodge Milk Middle Milk and Tributaries Low MT40J004_010 "BATTLE CREEK, Canadian border to mouth (Milk River)" RIVER 74.33 Sedimentation/Siltation 2000 B-3 5 10050008 Battle Milk Middle Milk and Tributaries Low MT40J005_020 "COTTONWOOD CREEK, Black Coulee to mouth (Milk River)" RIVER 57.36 Iron 2006 B-3 "5,5N" 10050010 Cottonwood Milk Middle Milk and Tributaries Low MT40J005_020 "COTTONWOOD CREEK, Black Coulee to mouth (Milk River)" RIVER 57.36 Sedimentation/Siltation 1990 B-3 "5,5N" 10050010 Cottonwood Milk Middle Milk and Tributaries Low MT40K001_010 "WHITEWATER CREEK, Canadian border to mouth (Milk River)" RIVER 67.63 Mercury 2006 B-3 5 10050011 Whitewater Milk Middle Milk and Tributaries Low MT40M001_013 "BEAVER CREEK, Fort Belknap Reservation boundary to Big Warm Creek" RIVER 55.12 Mercury 2006 B-3 5 10050014 Beaver Milk Beaver Low MT40M001_013 "BEAVER CREEK, Fort Belknap Reservation boundary to Big Warm Creek" RIVER 55.12 "Phosphorus, Total" 2006 B-3 5 10050014 Beaver Milk Beaver Low MT40M001_014 "BEAVER CREEK, Big Warm Creek to Un-Named tributary, T30N R32E S32" RIVER 97.99 Mercury 2006 B-3 5 10050014 Beaver Milk Beaver Low MT40M001_014 "BEAVER CREEK, Big Warm Creek to Un-Named tributary, T30N R32E S32" RIVER 97.99 "Phosphorus, Total" 2006 B-3 5 10050014 Beaver Milk Beaver Low MT40M001_020 "BEAVER CREEK, Un-named tributary at T30N R32E S32 to mouth (Milk River)" RIVER 86.86 "Nitrogen, Total" 1990 B-3 5 10050014 Beaver Milk Beaver Low MT40M001_020 "BEAVER CREEK, Un-named tributary at T30N R32E S32 to mouth (Milk River)" RIVER 86.86 "Phosphorus, Total" 1990 B-3 5 10050014 Beaver Milk Beaver Low MT40M001_020 "BEAVER CREEK, Un-named tributary at T30N R32E S32 to mouth (Milk River)" RIVER 86.86 Uranium 2000 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" RIVER 36.88 Arsenic 2006 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" RIVER 36.88 Cadmium 2006 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" RIVER 36.88 Copper 2006 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" RIVER 36.88 Dissolved Oxygen 2006 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" RIVER 36.88 Iron 2006 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" RIVER 36.88 Lead 2006 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" RIVER 36.88 Nitrate/Nitrite (Nitrite + Nitrate as N) 1996 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" RIVER 36.88 "Nitrogen, Total" 1996 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" RIVER 36.88 "Phosphorus, Total" 1996 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" RIVER 36.88 Sediment 1996 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_010 "FLAT CREEK, headwaters to mouth (Beaver Creek), T27N R32E S35" RIVER 36.88 Zinc 2006 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_020 "LARB CREEK, headwaters to mouth (Beaver Creek)" RIVER 76.67 Copper 2006 B-3 "5,5N" 10050014 Beaver Milk Beaver Low MT40M002_020 "LARB CREEK, headwaters to mouth (Beaver Creek)" RIVER 76.67 Dissolved Oxygen 2006 B-3 "5,5N" 10050014 Beaver Milk Beaver Low MT40M002_020 "LARB CREEK, headwaters to mouth (Beaver Creek)" RIVER 76.67 Lead 2006 B-3 "5,5N" 10050014 Beaver Milk Beaver Low MT40M002_020 "LARB CREEK, headwaters to mouth (Beaver Creek)" RIVER 76.67 "Nitrogen, Total" 2006 B-3 "5,5N" 10050014 Beaver Milk Beaver Low MT40M002_020 "LARB CREEK, headwaters to mouth (Beaver Creek)" RIVER 76.67 "Phosphorus, Total" 2006 B-3 "5,5N" 10050014 Beaver Milk Beaver Low MT40M002_030 "BIG WARM CREEK, Fort Belknap Reservation boundary to mouth (Beaver Creek)" RIVER 57.08 "Phosphorus, Total" 1996 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_030 "BIG WARM CREEK, Fort Belknap Reservation boundary to mouth (Beaver Creek)" RIVER 57.08 Salinity 2000 B-3 5 10050014 Beaver Milk Beaver Low MT40M002_030 "BIG WARM CREEK, Fort Belknap Reservation boundary to mouth (Beaver Creek)" RIVER 57.08 Sedimentation/Siltation 2000 B-3 5 10050014 Beaver Milk Beaver Low MT40M003_010 LAKE BOWDOIN FRESHWATER LAKE 3932.2 Salinity 1990 B-3 5 10050014 Beaver Milk Beaver Low MT40M003_010 LAKE BOWDOIN FRESHWATER LAKE 3932.2 Selenium 2000 B-3 5 10050014 Beaver Milk Beaver Low MT40M003_020 NELSON RESERVOIR FRESHWATER LAKE 4112.5 "Phosphorus, Total" 1990 B-3 5 10050014 Beaver Milk Beaver Low MT40O001_010 "MILK RIVER, Beaver Creek to mouth (Missouri River)" RIVER 134.52 Escherichia coli (E. Coli) 2000 B-3 5 10050012 Lower Milk Milk Lower Milk Low MT40O001_010 "MILK RIVER, Beaver Creek to mouth (Missouri River)" RIVER 134.52 Lead 2000 B-3 5 10050012 Lower Milk Milk Lower Milk Low MT40O001_010 "MILK RIVER, Beaver Creek to mouth (Missouri River)" RIVER 134.52 Mercury 2000 B-3 5 10050012 Lower Milk Milk Lower Milk Low MT40O002_020 "BUGGY CREEK, headwaters to mouth (Milk River)" RIVER 46.53 Iron 2006 B-3 5 10050012 Lower Milk Milk Lower Milk Low MT40O002_031 "WILLOW CREEK, headwaters to Halfpint Reservoir, T25N R35E S26" RIVER 10.38 Sedimentation/Siltation 1992 B-3 5 10050012 Lower Milk Milk Lower Milk Low MT40O002_033 "WILLOW CREEK, Halfpint Reservoir to mouth (Milk River), T28N R40E S29" RIVER 76.13 Sedimentation/Siltation 1992 B-3 5 10050012 Lower Milk Milk Lower Milk Low MT40O002_040 "BEAVER CREEK, confluence of Little Beaver Creek and South Fork Beaver Creek to mouth (Willow Creek)" RIVER 16.53 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-3 5 10050012 Lower Milk Milk Lower Milk Low MT40O002_040 "BEAVER CREEK, confluence of Little Beaver Creek and South Fork Beaver Creek to mouth (Willow Creek)" RIVER 16.53 Sediment 1996 B-3 5 10050012 Lower Milk Milk Lower Milk Low MT40O003_010 "PORCUPINE CREEK, confluence of West and Middle Forks to mouth (Milk River)" RIVER 49.29 "Nitrogen, Total" 1996 B-3 5 10050016 Porcupine Milk Lower Milk Low MT40O003_010 "PORCUPINE CREEK, confluence of West and Middle Forks to mouth (Milk River)" RIVER 49.29 "Phosphorus, Total" 1996 B-3 5 10050016 Porcupine Milk Lower Milk Low MT40O003_010 "PORCUPINE CREEK, confluence of West and Middle Forks to mouth (Milk River)" RIVER 49.29 Salinity 2000 B-3 5 10050016 Porcupine Milk Lower Milk Low MT40P002_010 "EAST REDWATER CREEK, headwaters to mouth (Redwater River)" RIVER 50.61 Sedimentation/Siltation 1992 C-3 5 10060002 Redwater Missouri-Poplar Redwater Low MT40Q001_011 "POPLAR RIVER, Confluence of East & Middle Forks to Fort Peck Reservation boundary, T33N R48E S12" RIVER 29.94 Escherichia coli (E. Coli) 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q001_011 "POPLAR RIVER, Confluence of East & Middle Forks to Fort Peck Reservation boundary, T33N R48E S12" RIVER 29.94 Sedimentation/Siltation 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q001_011 "POPLAR RIVER, Confluence of East & Middle Forks to Fort Peck Reservation boundary, T33N R48E S12" RIVER 29.94 Temperature 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q001_012 "MIDDLE FORK POPLAR RIVER, headwater (confluence of Lost Child & Goose Creeks) to the mouth (Poplar River)" RIVER 36.46 Escherichia coli (E. Coli) 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q001_012 "MIDDLE FORK POPLAR RIVER, headwater (confluence of Lost Child & Goose Creeks) to the mouth (Poplar River)" RIVER 36.46 Sedimentation/Siltation 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q001_012 "MIDDLE FORK POPLAR RIVER, headwater (confluence of Lost Child & Goose Creeks) to the mouth (Poplar River)" RIVER 36.46 Temperature 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" RIVER 41.95 Iron 2006 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" RIVER 41.95 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" RIVER 41.95 "Nitrogen, Total" 2006 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" RIVER 41.95 "Phosphorus, Total" 2006 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" RIVER 41.95 Sodium 1988 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q002_010 "BUTTE CREEK, headwaters to mouth (Poplar River)" RIVER 41.95 Specific Conductivity 1990 B-2 5 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40Q002_020 "EAST FORK POPLAR RIVER, Canada border to mouth (Poplar River)" RIVER 21.58 Iron 1990 B-2 "5,5N" 10060003 Poplar Missouri-Poplar Lower Missouri Low MT40R001_010 "BIG MUDDY CREEK, north corner of Fort Peck Reservation boundary to mouth (Missouri River)" RIVER 82.08 "Nitrogen, Total" 1990 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R001_010 "BIG MUDDY CREEK, north corner of Fort Peck Reservation boundary to mouth (Missouri River)" RIVER 82.08 "Phosphorus, Total" 1990 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R001_010 "BIG MUDDY CREEK, north corner of Fort Peck Reservation boundary to mouth (Missouri River)" RIVER 82.08 Sedimentation/Siltation 1990 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" RIVER 119.54 Copper 2002 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" RIVER 119.54 Lead 2002 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" RIVER 119.54 Mercury 2002 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" RIVER 119.54 "Nitrogen, Total" 1996 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" RIVER 119.54 Organic Enrichment 2000 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" RIVER 119.54 "Phosphorus, Total" 1996 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R001_020 "BIG MUDDY CREEK, Canadian border to northern boundary of Fort Peck Reservation" RIVER 119.54 Zinc 2002 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R003_010 MEDICINE LAKE FRESHWATER LAKE 9726.1 Cadmium 2006 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R003_010 MEDICINE LAKE FRESHWATER LAKE 9726.1 Lead 2006 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40R003_010 MEDICINE LAKE FRESHWATER LAKE 9726.1 Mercury 2006 C-3 5 10060006 Big Muddy Missouri-Poplar Lower Missouri Low MT40S001_011 "MISSOURI RIVER, Fort Peck Dam to Milk River" RIVER 9.79 Temperature 2002 B-2 5 10060001 Prairie Elk-Wolf Missouri-Poplar Lower Missouri Low MT40S001_012 "MISSOURI RIVER, Milk River to Poplar River" RIVER 81.86 Temperature 2002 B-3 5 10060001 Prairie Elk-Wolf Missouri-Poplar Lower Missouri Low MT40S002_030 "SAND CREEK, confluence of East and West Forks to mouth (Missouri River)" RIVER 19.82 Sedimentation/Siltation 1990 C-3 5 10060001 Prairie Elk-Wolf Missouri-Poplar Redwater Low MT40S003_010 "MISSOURI RIVER, Poplar River to North Dakota border" RIVER 91.97 Temperature 2000 B-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Low MT40S004_010 "CHARLIE CREEK, East and Middle Charlie Creek to mouth (Missouri River)" RIVER 32.86 Iron 2006 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Low MT40S004_010 "CHARLIE CREEK, East and Middle Charlie Creek to mouth (Missouri River)" RIVER 32.86 "Nitrogen, Total" 2006 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Low MT40S004_010 "CHARLIE CREEK, East and Middle Charlie Creek to mouth (Missouri River)" RIVER 32.86 Specific Conductivity 1988 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Low MT40S004_020 "HARDSCRABBLE CREEK, headwaters to mouth (Missouri River)" RIVER 35.91 "Nitrogen, Total" 2006 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Low MT40S004_020 "HARDSCRABBLE CREEK, headwaters to mouth (Missouri River)" RIVER 35.91 Specific Conductivity 1992 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Low MT40S004_020 "HARDSCRABBLE CREEK, headwaters to mouth (Missouri River)" RIVER 35.91 Total Dissolved Solids (TDS) 1992 C-3 5 10060005 Charlie-Little Muddy Missouri-Poplar Lower Missouri Low MT41A001_010 "RED ROCK RIVER, Lima Dam to Clark Canyon Reservoir" RIVER 51.81 "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A001_010 "RED ROCK RIVER, Lima Dam to Clark Canyon Reservoir" RIVER 51.81 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A001_010 "RED ROCK RIVER, Lima Dam to Clark Canyon Reservoir" RIVER 51.81 Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A001_010 "RED ROCK RIVER, Lima Dam to Clark Canyon Reservoir" RIVER 51.81 Temperature 2006 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A001_020 "RED ROCK RIVER, Lower Red Rock Lake to Lima Dam" RIVER 43.82 "Nitrogen, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A001_020 "RED ROCK RIVER, Lower Red Rock Lake to Lima Dam" RIVER 43.82 "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A001_020 "RED ROCK RIVER, Lower Red Rock Lake to Lima Dam" RIVER 43.82 Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A001_020 "RED ROCK RIVER, Lower Red Rock Lake to Lima Dam" RIVER 43.82 Temperature 1992 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_010 "MEDICINE LODGE CREEK, headwaters to mouth (Horse Prairie Creek)" RIVER 34.64 "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_010 "MEDICINE LODGE CREEK, headwaters to mouth (Horse Prairie Creek)" RIVER 34.64 "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_010 "MEDICINE LODGE CREEK, headwaters to mouth (Horse Prairie Creek)" RIVER 34.64 Temperature 2006 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_020 "MUDDY CREEK, confluence of Sourdough and Wilson Creek to mouth (Big Sheep Creek), T14S R10W S10" RIVER 11.08 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_030 "CABIN CREEK, headwaters to mouth (Big Sheep Creek)" RIVER 17.15 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_040 "NICHOLIA CREEK, headwaters to mouth (Big Sheep Creek)" RIVER 19.14 Aluminum 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock High MT41A003_040 "NICHOLIA CREEK, headwaters to mouth (Big Sheep Creek)" RIVER 19.14 "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_040 "NICHOLIA CREEK, headwaters to mouth (Big Sheep Creek)" RIVER 19.14 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_080 "TRAIL CREEK, headwaters to mouth (Horse Prairie Creek)" RIVER 15.62 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_090 "HORSE PRAIRIE CREEK, headwaters to mouth (Clark Canyon Res)" RIVER 46.67 Mercury 2000 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_090 "HORSE PRAIRIE CREEK, headwaters to mouth (Clark Canyon Res)" RIVER 46.67 "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_090 "HORSE PRAIRIE CREEK, headwaters to mouth (Clark Canyon Res)" RIVER 46.67 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_100 "BLOODY DICK CREEK, headwaters to mouth (Horse Prairie Creek)" RIVER 30.32 "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_110 "SELWAY CREEK, headwaters to mouth (Bloody Dick Creek)" RIVER 9.12 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_140 "SAGE CREEK, headwaters to mouth (Red Rock River)" RIVER 40.1 "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_140 "SAGE CREEK, headwaters to mouth (Red Rock River)" RIVER 40.1 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_150 "BIG SHEEP CREEK, headwaters to mouth (Red Rock River)" RIVER 21.78 "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_150 "BIG SHEEP CREEK, headwaters to mouth (Red Rock River)" RIVER 21.78 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_160 "LITTLE SHEEP CREEK, headwaters to mouth (Red Rock River)" RIVER 17.46 "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A003_160 "LITTLE SHEEP CREEK, headwaters to mouth (Red Rock River)" RIVER 17.46 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A004_010 "PRICE CREEK, headwaters to mouth (Red Rock River)" RIVER 10.52 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A004_020 "METZEL CREEK, headwaters to mouth (Red Rock River)" RIVER 13.59 "Phosphorus, Total" 2020 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A004_030 "FISH CREEK, headwaters to mouth (Metzel Creek)" RIVER 7.88 "Nitrogen, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A004_030 "FISH CREEK, headwaters to mouth (Metzel Creek)" RIVER 7.88 "Phosphorus, Total" 2020 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A004_040 "CORRAL CREEK, headwaters to mouth (Red Rock Creek)" RIVER 4.29 "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A004_050 "EAST FORK CLOVER CREEK, headwaters to mouth (Clover Creek)" RIVER 5.78 "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A004_090 "PEET CREEK, headwaters to mouth (Red Rock River)" RIVER 10.13 "Nitrogen, Total" 2006 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A004_090 "PEET CREEK, headwaters to mouth (Red Rock River)" RIVER 10.13 "Phosphorus, Total" 2006 B-1 "5,5N" 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A004_130 "JONES CREEK, headwaters to mouth (Winslow Creek)" RIVER 8.33 "Phosphorus, Total" 2006 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A005_020 LOWER RED ROCK LAKE FRESHWATER LAKE 2217.5 Sedimentation/Siltation 2000 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41A005_030 UPPER RED ROCK LAKE FRESHWATER LAKE 2947 Sedimentation/Siltation 1990 B-1 5 10020001 Red Rock Missouri Headwaters Red Rock Low MT41B001_010 "BEAVERHEAD RIVER, Clark Canyon Dam to Grasshopper Creek" RIVER 12.32 "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B001_010 "BEAVERHEAD RIVER, Clark Canyon Dam to Grasshopper Creek" RIVER 12.32 "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B001_020 "BEAVERHEAD RIVER, Grasshopper Creek to mouth (Jefferson River)" RIVER 66.04 "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B001_020 "BEAVERHEAD RIVER, Grasshopper Creek to mouth (Jefferson River)" RIVER 66.04 "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_010 "GRASSHOPPER CREEK, headwaters to mouth (Beaverhead River)" RIVER 60.18 "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_010 "GRASSHOPPER CREEK, headwaters to mouth (Beaverhead River)" RIVER 60.18 "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_030 "BLACKTAIL DEER CREEK, headwaters to mouth (Beaverhead River)" RIVER 42.88 "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_030 "BLACKTAIL DEER CREEK, headwaters to mouth (Beaverhead River)" RIVER 42.88 Temperature 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_070 "WEST FORK DYCE CREEK, headwaters to mouth (Dyce Creek)" RIVER 3.95 "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_080 "SPRING CREEK, headwaters to mouth (Beaverhead River)" RIVER 15.67 "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_080 "SPRING CREEK, headwaters to mouth (Beaverhead River)" RIVER 15.67 "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_090 "RATTLESNAKE CREEK, from the Dillon PWS off-channel well T7S R10W S11 to the mouth (Van Camp Slough)" RIVER 9.52 "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_090 "RATTLESNAKE CREEK, from the Dillon PWS off-channel well T7S R10W S11 to the mouth (Van Camp Slough)" RIVER 9.52 "Phosphorus, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_110 "CLARK CANYON CREEK, headwaters to mouth (Beaverhead River), T9S R10W S28" RIVER 8.07 "Phosphorus, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_120 "RESERVOIR CREEK, headwaters to mouth (Grasshopper Creek)" RIVER 12.76 "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_120 "RESERVOIR CREEK, headwaters to mouth (Grasshopper Creek)" RIVER 12.76 "Phosphorus, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_131 "STONE CREEK, Un-named tributary at T6S R7W S34 to Staudaher Bishop Ditch" RIVER 6.53 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_131 "STONE CREEK, Un-named tributary at T6S R7W S34 to Staudaher Bishop Ditch" RIVER 6.53 "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_131 "STONE CREEK, Un-named tributary at T6S R7W S34 to Staudaher Bishop Ditch" RIVER 6.53 "Phosphorus, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_132 "STONE CREEK, Left and Middle Fork to un-named tributary, T6S R7W S34" RIVER 7.07 Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_132 "STONE CREEK, Left and Middle Fork to un-named tributary, T6S R7W S34" RIVER 7.07 "Nitrogen, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_132 "STONE CREEK, Left and Middle Fork to un-named tributary, T6S R7W S34" RIVER 7.07 "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_140 "DYCE CREEK, confluence of East and West Forks to Grasshopper Creek" RIVER 4.13 "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_140 "DYCE CREEK, confluence of East and West Forks to Grasshopper Creek" RIVER 4.13 "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_160 "STEEL CREEK, headwaters to mouth (Driscoll Creek), T6S R12W S18" RIVER 3.66 "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_160 "STEEL CREEK, headwaters to mouth (Driscoll Creek), T6S R12W S18" RIVER 3.66 "Phosphorus, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_170 "TAYLOR CREEK, headwaters to mouth (Grasshopper Creek)" RIVER 11.73 "Nitrogen, Total" 2006 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_170 "TAYLOR CREEK, headwaters to mouth (Grasshopper Creek)" RIVER 11.73 "Phosphorus, Total" 2018 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41B002_180 "SCUDDER CREEK, headwaters to mouth (Grasshopper Creek), T6S R12W S19" RIVER 5.62 "Nitrogen, Total" 2010 B-1 5 10020002 Beaverhead Missouri Headwaters Beaverhead Low MT41C001_010 "RUBY RIVER, Ruby Dam to mouth (Beaverhead River)" RIVER 48.03 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C001_020 "RUBY RIVER, confluence of East, West, and Middle Forks to Ruby Reservoir" RIVER 41.79 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_010 "WISCONSIN CREEK, headwaters to mouth (Ruby River)" RIVER 13.14 Arsenic 2002 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_010 "WISCONSIN CREEK, headwaters to mouth (Ruby River)" RIVER 13.14 Copper 2002 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_010 "WISCONSIN CREEK, headwaters to mouth (Ruby River)" RIVER 13.14 Lead 2002 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_010 "WISCONSIN CREEK, headwaters to mouth (Ruby River)" RIVER 13.14 Mercury 2002 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_020 "MILL CREEK, headwaters to mouth (Ruby River)" RIVER 21.68 "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_020 "MILL CREEK, headwaters to mouth (Ruby River)" RIVER 21.68 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_040 "ALDER GULCH, headwaters to mouth (Ruby River)" RIVER 20.65 Lead 2000 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_040 "ALDER GULCH, headwaters to mouth (Ruby River)" RIVER 20.65 Manganese 2000 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_040 "ALDER GULCH, headwaters to mouth (Ruby River)" RIVER 20.65 Mercury 2000 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_040 "ALDER GULCH, headwaters to mouth (Ruby River)" RIVER 20.65 "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_050 "RAMSHORN CREEK, headwaters to mouth (Ruby River)" RIVER 15.2 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_060 "CURRANT CREEK, headwaters to mouth (Ramshorn Creek), T4S R4W S35" RIVER 3.72 Copper 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_060 "CURRANT CREEK, headwaters to mouth (Ramshorn Creek), T4S R4W S35" RIVER 3.72 Lead 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_060 "CURRANT CREEK, headwaters to mouth (Ramshorn Creek), T4S R4W S35" RIVER 3.72 "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_060 "CURRANT CREEK, headwaters to mouth (Ramshorn Creek), T4S R4W S35" RIVER 3.72 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_090 "CALIFORNIA CREEK, headwaters to mouth (Ruby River), T5S R4W S30" RIVER 10.94 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_100 "GARDEN CREEK, headwaters to mouth (Ruby Reservoir)" RIVER 7.72 "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_100 "GARDEN CREEK, headwaters to mouth (Ruby Reservoir)" RIVER 7.72 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C002_110 "MORMON CREEK, headwaters to mouth (Upper end of Ruby River Reservoir )" RIVER 7.86 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_030 "COTTONWOOD CREEK, headwaters to mouth (Ruby River)" RIVER 11.15 "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_040 "EAST FORK RUBY RIVER, headwaters to mouth (Ruby River)" RIVER 10.3 "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_040 "EAST FORK RUBY RIVER, headwaters to mouth (Ruby River)" RIVER 10.3 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_060 "SWEETWATER CREEK, headwaters to mouth (Ruby River)" RIVER 24.72 Temperature 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_090 "MIDDLE FORK RUBY RIVER, Divide Creek to mouth (Ruby River)" RIVER 11.82 "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_090 "MIDDLE FORK RUBY RIVER, Divide Creek to mouth (Ruby River)" RIVER 11.82 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_110 "POISON CREEK, headwaters to mouth (Ruby River), T11S R3W S18" RIVER 6.2 Cadmium 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_110 "POISON CREEK, headwaters to mouth (Ruby River), T11S R3W S18" RIVER 6.2 Lead 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_110 "POISON CREEK, headwaters to mouth (Ruby River), T11S R3W S18" RIVER 6.2 "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_110 "POISON CREEK, headwaters to mouth (Ruby River), T11S R3W S18" RIVER 6.2 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_120 "BASIN CREEK, headwaters to mouth (Ruby River), T11S R3W S20" RIVER 5.4 "Nitrogen, Total" 2006 A-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_120 "BASIN CREEK, headwaters to mouth (Ruby River), T11S R3W S20" RIVER 5.4 "Phosphorus, Total" 2006 A-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_130 "BURNT CREEK, headwaters to mouth (Ruby River), T10S R3W S21" RIVER 5.62 "Nitrogen, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_130 "BURNT CREEK, headwaters to mouth (Ruby River), T10S R3W S21" RIVER 5.62 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41C003_140 "HAWKEYE CREEK, headwaters to mouth (Middle Fork Ruby River)" RIVER 4.23 "Phosphorus, Total" 2006 B-1 5 10020003 Ruby Missouri Headwaters Ruby Low MT41D001_010 "BIG HOLE RIVER, Divide Creek to mouth (Jefferson River)" RIVER 49.27 Cadmium 2000 B-1 5 10020004 Big Hole Missouri Headwaters Lower Big Hole Low MT41D001_010 "BIG HOLE RIVER, Divide Creek to mouth (Jefferson River)" RIVER 49.27 Copper 2000 B-1 5 10020004 Big Hole Missouri Headwaters Lower Big Hole Low MT41D001_010 "BIG HOLE RIVER, Divide Creek to mouth (Jefferson River)" RIVER 49.27 Lead 2000 B-1 5 10020004 Big Hole Missouri Headwaters Lower Big Hole Low MT41D001_010 "BIG HOLE RIVER, Divide Creek to mouth (Jefferson River)" RIVER 49.27 Zinc 2000 B-1 5 10020004 Big Hole Missouri Headwaters Lower Big Hole Low MT41D002_020 "CAMP CREEK, headwaters to mouth (Big Hole River)" RIVER 15.6 Arsenic 2006 B-1 5 10020004 Big Hole Missouri Headwaters Lower Big Hole Low MT41D002_070 "SASSMAN GULCH, headwaters to the end of the stream reach in T4S R9W S9" RIVER 3.89 Arsenic 1988 B-1 5 10020004 Big Hole Missouri Headwaters Lower Big Hole Low MT41D002_120 "WICKIUP CREEK, headwaters to mouth (Camp Creek), T2S R8W S1" RIVER 4.09 Lead 1994 B-1 5 10020004 Big Hole Missouri Headwaters Lower Big Hole Low MT41D002_120 "WICKIUP CREEK, headwaters to mouth (Camp Creek), T2S R8W S1" RIVER 4.09 Mercury 1994 B-1 5 10020004 Big Hole Missouri Headwaters Lower Big Hole Low MT41D002_120 "WICKIUP CREEK, headwaters to mouth (Camp Creek), T2S R8W S1" RIVER 4.09 "Phosphorus, Total" 2006 B-1 5 10020004 Big Hole Missouri Headwaters Lower Big Hole Low MT41D002_120 "WICKIUP CREEK, headwaters to mouth (Camp Creek), T2S R8W S1" RIVER 4.09 Sediment 1994 B-1 5 10020004 Big Hole Missouri Headwaters Lower Big Hole Low MT41D002_150 "CHARCOAL CREEK, headwaters to mouth (Big Hole River)" RIVER 4.06 "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Middle Big Hole Low MT41D002_150 "CHARCOAL CREEK, headwaters to mouth (Big Hole River)" RIVER 4.06 "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Middle Big Hole Low MT41D002_150 "CHARCOAL CREEK, headwaters to mouth (Big Hole River)" RIVER 4.06 Sedimentation/Siltation 2006 A-1 5 10020004 Big Hole Missouri Headwaters Middle Big Hole Low MT41D003_020 "JERRY CREEK, headwaters to mouth (Big Hole River)" RIVER 12.69 Lead 2000 A-1 5 10020004 Big Hole Missouri Headwaters Middle Big Hole Low MT41D003_070 "CALIFORNIA CREEK, headwaters to mouth (French Creek-Deep Creek)" RIVER 8.28 Iron 1992 B-1 5 10020004 Big Hole Missouri Headwaters Middle Big Hole Low MT41D003_080 "OREGON CREEK, headwaters to mouth (California Creek-French Creek-Deep Creek)" RIVER 3.09 Lead 2000 A-1 5 10020004 Big Hole Missouri Headwaters Middle Big Hole Low MT41D003_120 "TWELVEMILE CREEK, headwaters to mouth (Deep Creek)" RIVER 9.09 Sedimentation/Siltation 1992 A-1 5 10020004 Big Hole Missouri Headwaters Middle Big Hole Low MT41D003_160 "FISHTRAP CREEK, confluence of West & Middle Forks to mouth (Big Hole River)" RIVER 5.85 "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Middle Big Hole Low MT41D003_170 "PINTLAR CREEK, headwaters to mouth (Big Hole River)" RIVER 21.25 Temperature 2000 A-1 5 10020004 Big Hole Missouri Headwaters Middle Big Hole Low MT41D003_230 "GOLD CREEK, headwaters to mouth (Wise River)" RIVER 4.92 "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Middle Big Hole Low MT41D004_020 "MUSSIGBROD CREEK, headwaters to mouth (North Fork Big Hole River)" RIVER 14.62 Lead 2000 A-1 5 10020004 Big Hole Missouri Headwaters North Fork Big Hole Low MT41D004_030 "JOHNSON CREEK, headwaters to mouth (North Fork Big Hole River)" RIVER 15.7 "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters North Fork Big Hole Low MT41D004_040 "SCHULTZ CREEK, headwaters to mouth (Johnson Creek)" RIVER 3.28 Sedimentation/Siltation 1992 A-1 5 10020004 Big Hole Missouri Headwaters North Fork Big Hole Low MT41D004_060 "TIE CREEK, headwaters to mouth (North Fork Big Hole River)" RIVER 16.49 "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters North Fork Big Hole Low MT41D004_090 "JOSEPH CREEK, headwaters to mouth (Trail Creek)" RIVER 7.29 Copper 2002 A-1 5 10020004 Big Hole Missouri Headwaters North Fork Big Hole Low MT41D004_090 "JOSEPH CREEK, headwaters to mouth (Trail Creek)" RIVER 7.29 Lead 2002 A-1 5 10020004 Big Hole Missouri Headwaters North Fork Big Hole Low MT41D004_110 "SWAMP CREEK, headwaters to mouth (Big Hole River)" RIVER 25 "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_110 "SWAMP CREEK, headwaters to mouth (Big Hole River)" RIVER 25 "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_120 "ROCK CREEK, headwaters to mouth (Big Hole River)" RIVER 25.62 "Nitrogen, Total" 2002 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_120 "ROCK CREEK, headwaters to mouth (Big Hole River)" RIVER 25.62 "Phosphorus, Total" 2002 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_150 "GOVERNOR CREEK, headwaters to mouth (Warm Springs Creek)" RIVER 19 Copper 2000 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_160 "PINE CREEK, headwaters to mouth (Andrus Creek)" RIVER 5.37 "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_170 "FOX CREEK, headwaters to mouth (Governor Creek)" RIVER 6.85 "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_180 "WARM SPRINGS CREEK, headwaters to mouth (Big Hole River)" RIVER 20 "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_180 "WARM SPRINGS CREEK, headwaters to mouth (Big Hole River)" RIVER 20 "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_180 "WARM SPRINGS CREEK, headwaters to mouth (Big Hole River)" RIVER 20 Sedimentation/Siltation 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_190 "STEEL CREEK, headwaters to mouth (Big Hole River)" RIVER 16.69 Cadmium 2000 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_190 "STEEL CREEK, headwaters to mouth (Big Hole River)" RIVER 16.69 Copper 2000 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_210 "McVEY CREEK, headwaters to mouth (Big Hole River)" RIVER 9.48 "Nitrogen, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_210 "McVEY CREEK, headwaters to mouth (Big Hole River)" RIVER 9.48 "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Upper Big Hole Low MT41D004_230 "SAWLOG CREEK, headwaters to mouth (Big Hole River)" RIVER 4.79 "Phosphorus, Total" 2006 A-1 5 10020004 Big Hole Missouri Headwaters Middle Big Hole Low MT41F001_010 "MADISON RIVER, Madison Dam to mouth (Missouri River)" RIVER 41.31 Arsenic 2016 B-1 "5,5N" 10020007 Madison Missouri Headwaters Madison Low MT41F001_010 "MADISON RIVER, Madison Dam to mouth (Missouri River)" RIVER 41.31 Sedimentation/Siltation 2000 B-1 "5,5N" 10020007 Madison Missouri Headwaters Madison Low MT41F001_010 "MADISON RIVER, Madison Dam to mouth (Missouri River)" RIVER 41.31 Temperature 1990 B-1 "5,5N" 10020007 Madison Missouri Headwaters Madison Low MT41F001_020 "MADISON RIVER, Quake Lake to Ennis Lake" RIVER 56.02 Arsenic 2016 B-1 "5,5N" 10020007 Madison Missouri Headwaters Madison Low MT41F001_030 "MADISON RIVER, Hebgen Dam to Quake Lake" RIVER 2.29 Arsenic 2016 B-1 "5,5N" 10020007 Madison Missouri Headwaters Madison Low MT41F002_020 "ELK CREEK, headwaters to mouth (Madison River)" RIVER 18.33 Arsenic 2016 B-1 5 10020007 Madison Missouri Headwaters Madison Low MT41F004_010 "BLAINE SPRING CREEK, headwaters to mouth (Madison River, T7S R1W S6)" RIVER 4.95 Arsenic 2016 B-1 "5,5N" 10020007 Madison Missouri Headwaters Madison Low MT41F004_010 "BLAINE SPRING CREEK, headwaters to mouth (Madison River, T7S R1W S6)" RIVER 4.95 "Nitrogen, Total" 2006 B-1 "5,5N" 10020007 Madison Missouri Headwaters Madison Low MT41F004_020 "O'DELL SPRING CREEK, headwaters to mouth (Madison River)" RIVER 13.194 Arsenic 2000 B-1 "5,5N" 10020007 Madison Missouri Headwaters Madison Low MT41F004_100 "WEST FORK MADISON RIVER, headwaters to mouth (Madison River)" RIVER 39.41 Temperature 2000 B-1 5 10020007 Madison Missouri Headwaters Madison Low MT41F004_130 "MOORE CREEK, springs to mouth (Fletcher Channel), T5S R1W S15" RIVER 15.83 Arsenic 2000 B-1 5 10020007 Madison Missouri Headwaters Madison Low MT41F004_150 "BUFORD CREEK, headwaters to confluence with West Fork Madison River" RIVER 4.36 Arsenic 2006 B-1 "5,5N" 10020007 Madison Missouri Headwaters Madison Low MT41F005_030 ENNIS LAKE FRESHWATER LAKE 3757.8 Arsenic 2016 B-1 "5,5N" 10020007 Madison Missouri Headwaters Madison Low MT41G001_011 "JEFFERSON RIVER, headwaters to confluence of Jefferson Slough" RIVER 40.9 Sedimentation/Siltation 1988 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G001_012 "JEFFERSON RIVER, confluence of Jefferson Slough to mouth (Missouri River)" RIVER 33.5 Sedimentation/Siltation 1988 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G001_012 "JEFFERSON RIVER, confluence of Jefferson Slough to mouth (Missouri River)" RIVER 33.5 Temperature 2000 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_010 "BIG PIPESTONE CREEK, headwaters to mouth (Jefferson Slough), T1N R4W S11" RIVER 22.46 "Nitrogen, Total" 1990 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G002_010 "BIG PIPESTONE CREEK, headwaters to mouth (Jefferson Slough), T1N R4W S11" RIVER 22.46 "Phosphorus, Total" 1990 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G002_010 "BIG PIPESTONE CREEK, headwaters to mouth (Jefferson Slough), T1N R4W S11" RIVER 22.46 Temperature 2000 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G002_020 "HALFWAY CREEK, headwaters to mouth (Big Pipestone Creek-Jefferson River)" RIVER 7.9 Sedimentation/Siltation 1992 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G002_040 "LITTLE PIPESTONE CREEK, headwaters to mouth (Big Pipestone Creek)" RIVER 16.86 "Nitrogen, Total" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G002_040 "LITTLE PIPESTONE CREEK, headwaters to mouth (Big Pipestone Creek)" RIVER 16.86 "Phosphorus, Total" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G002_050 "NORTH WILLOW CREEK, headwaters to mouth (Willow Creek)" RIVER 17.62 Lead 1992 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_050 "NORTH WILLOW CREEK, headwaters to mouth (Willow Creek)" RIVER 17.62 Mercury 1992 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_060 "SOUTH BOULDER RIVER, headwaters to mouth (Jefferson River)" RIVER 23.32 Arsenic 2000 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_060 "SOUTH BOULDER RIVER, headwaters to mouth (Jefferson River)" RIVER 23.32 Copper 2000 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_060 "SOUTH BOULDER RIVER, headwaters to mouth (Jefferson River)" RIVER 23.32 Lead 2000 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_060 "SOUTH BOULDER RIVER, headwaters to mouth (Jefferson River)" RIVER 23.32 Mercury 2000 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_060 "SOUTH BOULDER RIVER, headwaters to mouth (Jefferson River)" RIVER 23.32 "Phosphorus, Total" 2000 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_080 "WILLOW CREEK, North and South Fork confluence to mouth (Jefferson River)" RIVER 15.28 Temperature 2000 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_080 "WILLOW CREEK, North and South Fork confluence to mouth (Jefferson River)" RIVER 15.28 Zinc 2000 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_090 "NORWEGIAN CREEK, headwaters to mouth (Willow Creek Reservoir)" RIVER 10.82 Arsenic 2006 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_090 "NORWEGIAN CREEK, headwaters to mouth (Willow Creek Reservoir)" RIVER 10.82 "Nitrogen, Total" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_090 "NORWEGIAN CREEK, headwaters to mouth (Willow Creek Reservoir)" RIVER 10.82 "Phosphorus, Total" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_090 "NORWEGIAN CREEK, headwaters to mouth (Willow Creek Reservoir)" RIVER 10.82 Sedimentation/Siltation 2006 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_090 "NORWEGIAN CREEK, headwaters to mouth (Willow Creek Reservoir)" RIVER 10.82 Temperature 2006 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_130 "SOUTH WILLOW CREEK, headwaters to mouth (Willow Creek)" RIVER 16.2 Sedimentation/Siltation 1992 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_130 "SOUTH WILLOW CREEK, headwaters to mouth (Willow Creek)" RIVER 16.2 Zinc 1992 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_141 "WHITETAIL DEER CREEK, headwaters to mouth (Jefferson Slough)" RIVER 27.13 "Ammonia, Un-ionized" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G002_141 "WHITETAIL DEER CREEK, headwaters to mouth (Jefferson Slough)" RIVER 27.13 Nitrate/Nitrite (Nitrite + Nitrate as N) 1994 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G002_141 "WHITETAIL DEER CREEK, headwaters to mouth (Jefferson Slough)" RIVER 27.13 "Nitrogen, Total" 1994 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G002_141 "WHITETAIL DEER CREEK, headwaters to mouth (Jefferson Slough)" RIVER 27.13 "Phosphorus, Total" 1994 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G002_150 "CHARCOAL CREEK, headwaters to mouth (Pony Creek)" RIVER 2.72 Sedimentation/Siltation 1994 B-1 5 10020005 Jefferson Missouri Headwaters Lower Jefferson Low MT41G002_160 "FITZ CREEK, headwaters to mouth (Whitetail Deer Creek)" RIVER 4.71 "Phosphorus, Total" 2006 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41G002_160 "FITZ CREEK, headwaters to mouth (Whitetail Deer Creek)" RIVER 4.71 Sedimentation/Siltation 1996 B-1 5 10020005 Jefferson Missouri Headwaters Upper Jefferson Low MT41H001_021 "GALLATIN RIVER, Yellowstone National Park Boundary to Spanish Creek" RIVER 39.28 Excess Algal Growth 2022 B-1 5 10020008 Gallatin Missouri Headwaters Upper Gallatin Medium MT41H005_010 "STORM CASTLE CREEK, headwaters to the mouth (Gallatin River), T4S R4E S33" RIVER 14.19 "Phosphorus, Total" 2000 B-1 5 10020008 Gallatin Missouri Headwaters Upper Gallatin Low MT41H005_020 "TAYLOR FORK, Lee Metcalf Wilderness boundary to mouth (Gallatin River)" RIVER 13.98 Sedimentation/Siltation 2000 B-1 5 10020008 Gallatin Missouri Headwaters Upper Gallatin Low MT41H005_030 "CACHE CREEK, headwaters to mouth (Taylor Fork)" RIVER 4.66 Sedimentation/Siltation 1988 B-1 5 10020008 Gallatin Missouri Headwaters Upper Gallatin Low MT41H005_040 "WEST FORK GALLATIN RIVER, confluence Middle and North Forks to mouth (Gallatin River)" RIVER 3.87 "Phosphorus, Total" 2000 B-1 5 10020008 Gallatin Missouri Headwaters Upper Gallatin Low MT41H005_060 "SOUTH FORK WEST FORK GALLATIN RIVER, headwaters to mouth (West Fork Gallatin River)" RIVER 14.57 "Phosphorus, Total" 2000 B-1 5 10020008 Gallatin Missouri Headwaters Upper Gallatin Low MT41I001_011 "MISSOURI RIVER, headwaters to Toston Dam" RIVER 21.95 Arsenic 2006 B-1 "5,5N" 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I001_011 "MISSOURI RIVER, headwaters to Toston Dam" RIVER 21.95 "Nitrogen, Total" 1988 B-1 "5,5N" 10030101 Upper Missouri Upper Missouri Missouri River Medium MT41I001_011 "MISSOURI RIVER, headwaters to Toston Dam" RIVER 21.95 Sedimentation/Siltation 1988 B-1 "5,5N" 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I001_012 "MISSOURI RIVER, Toston Dam to Canyon Ferry Reservoir" RIVER 22.6 Cadmium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I001_012 "MISSOURI RIVER, Toston Dam to Canyon Ferry Reservoir" RIVER 22.6 Copper 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I001_012 "MISSOURI RIVER, Toston Dam to Canyon Ferry Reservoir" RIVER 22.6 Lead 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I001_012 "MISSOURI RIVER, Toston Dam to Canyon Ferry Reservoir" RIVER 22.6 Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I002_020 "BATTLE CREEK, headwaters to mouth (Sixteenmile Creek)" RIVER 22.76 "Phosphorus, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_020 "BATTLE CREEK, headwaters to mouth (Sixteenmile Creek)" RIVER 22.76 Sedimentation/Siltation 1990 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_020 "BATTLE CREEK, headwaters to mouth (Sixteenmile Creek)" RIVER 22.76 Temperature 2006 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 14.74 Cadmium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 14.74 "Chromium, Total" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 14.74 Lead 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 14.74 Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 14.74 "Phosphorus, Total" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 14.74 Silver 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_030 "BEAVER CREEK, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 14.74 Zinc 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_041 "CONFEDERATE GULCH, headwaters to Hunter Gulch" RIVER 10.04 Cadmium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_041 "CONFEDERATE GULCH, headwaters to Hunter Gulch" RIVER 10.04 Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_042 "CONFEDERATE GULCH, Hunter Gulch to mouth (Canyon Ferry Reservoir)" RIVER 5.21 Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_042 "CONFEDERATE GULCH, Hunter Gulch to mouth (Canyon Ferry Reservoir)" RIVER 5.21 "Phosphorus, Total" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_050 "CROW CREEK, National Forest boundary to mouth (Missouri River)" RIVER 15.89 "Nitrogen, Total" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_050 "CROW CREEK, National Forest boundary to mouth (Missouri River)" RIVER 15.89 "Phosphorus, Total" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_050 "CROW CREEK, National Forest boundary to mouth (Missouri River)" RIVER 15.89 Sedimentation/Siltation 1996 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_060 "CROW CREEK, Crow Creek Falls to National Forest boundary" RIVER 10.15 Copper 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_060 "CROW CREEK, Crow Creek Falls to National Forest boundary" RIVER 10.15 Lead 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_070 "DEEP CREEK, National Forest boundary to mouth (Missouri River)" RIVER 20.35 Temperature 2016 B-1 5 10030101 Upper Missouri Upper Missouri Deep Creek Low MT41I002_080 "DRY CREEK, headwaters to mouth (Missouri River)" RIVER 21.56 "Phosphorus, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_080 "DRY CREEK, headwaters to mouth (Missouri River)" RIVER 21.56 Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_080 "DRY CREEK, headwaters to mouth (Missouri River)" RIVER 21.56 Temperature 2006 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_090 "HELLGATE GULCH, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 11.6 Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_100 "INDIAN CREEK, headwaters to mouth (Missouri River)" RIVER 8.01 Arsenic 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_100 "INDIAN CREEK, headwaters to mouth (Missouri River)" RIVER 8.01 Cadmium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_100 "INDIAN CREEK, headwaters to mouth (Missouri River)" RIVER 8.01 Lead 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_100 "INDIAN CREEK, headwaters to mouth (Missouri River)" RIVER 8.01 Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_110 "MAGPIE CREEK, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 12.76 "Nitrogen, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_110 "MAGPIE CREEK, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 12.76 Sedimentation/Siltation 2006 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_120 "SIXTEENMILE CREEK, Lost Creek to mouth (Missouri River)" RIVER 49.61 "Nitrogen, Total" 1988 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_120 "SIXTEENMILE CREEK, Lost Creek to mouth (Missouri River)" RIVER 49.61 "Phosphorus, Total" 1988 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_120 "SIXTEENMILE CREEK, Lost Creek to mouth (Missouri River)" RIVER 49.61 Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_130 "WHITE GULCH, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 13.26 Sedimentation/Siltation 2006 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_140 "WILSON CREEK, 3.3 miles upstream to mouth (Crow Creek)" RIVER 3.3 Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_150 "CAVE GULCH, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 6.42 "Nitrogen, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_150 "CAVE GULCH, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 6.42 "Phosphorus, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_150 "CAVE GULCH, headwaters to mouth (Canyon Ferry Reservoir)" RIVER 6.42 Sedimentation/Siltation 1992 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_170 "EAST FORK INDIAN CREEK, headwaters to mouth (Indian Creek)" RIVER 5.87 Arsenic 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_170 "EAST FORK INDIAN CREEK, headwaters to mouth (Indian Creek)" RIVER 5.87 Cadmium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_170 "EAST FORK INDIAN CREEK, headwaters to mouth (Indian Creek)" RIVER 5.87 Lead 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I002_170 "EAST FORK INDIAN CREEK, headwaters to mouth (Indian Creek)" RIVER 5.87 Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I003_010 CANYON FERRY RESERVOIR FRESHWATER LAKE 32810 "Ammonia, Un-ionized" 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I003_010 CANYON FERRY RESERVOIR FRESHWATER LAKE 32810 Arsenic 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I003_010 CANYON FERRY RESERVOIR FRESHWATER LAKE 32810 Thallium 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I004_030 "MISSOURI RIVER, Holter Dam to Little Prickly Pear Creek" RIVER 2.84 "Nitrogen, Total" 1988 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Medium MT41I004_030 "MISSOURI RIVER, Holter Dam to Little Prickly Pear Creek" RIVER 2.84 "Phosphorus, Total" 1988 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Medium MT41I004_030 "MISSOURI RIVER, Holter Dam to Little Prickly Pear Creek" RIVER 2.84 Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I005_011 "BEAVER CREEK, headwaters to confluence of Bridge Creek" RIVER 13.8 Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Holter Low MT41I005_012 "BEAVER CREEK, Nelson to mouth (Missouri River below Hauser Dam)" RIVER 5.51 Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Holter Low MT41I005_020 "TROUT CREEK, headwaters to mouth (Hauser Lake)" RIVER 20.52 Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Canyon Ferry Low MT41I005_040 "VIRGINIA CREEK, headwaters to mouth (Canyon Creek)" RIVER 8.25 Lead 1988 B-1 5 10030101 Upper Missouri Upper Missouri Holter Low MT41I005_051 "LITTLE PRICKLY PEAR CREEK, North and South Forks to Clark Creek" RIVER 23.9 Sedimentation/Siltation 1988 B-1 5 10030101 Upper Missouri Upper Missouri Holter Low MT41I005_051 "LITTLE PRICKLY PEAR CREEK, North and South Forks to Clark Creek" RIVER 23.9 Temperature 2000 B-1 5 10030101 Upper Missouri Upper Missouri Holter Low MT41I005_052 "LITTLE PRICKLY PEAR CREEK, Clark Creek to mouth (Missouri River)" RIVER 10.23 Temperature 2000 B-1 5 10030101 Upper Missouri Upper Missouri Holter Low MT41I005_080 "WOODSIDING GULCH, headwaters to mouth (Little Prickly Pear Creek), T13N R4W S33" RIVER 2.19 "Phosphorus, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Holter Low MT41I006_020 "PRICKLY PEAR CREEK, Helena WWTP Discharge Ditch to Lake Helena" RIVER 4.15 "Ammonia, Un-ionized" 1990 I 5 10030101 Upper Missouri Upper Missouri Lake Helena Low MT41I006_020 "PRICKLY PEAR CREEK, Helena WWTP Discharge Ditch to Lake Helena" RIVER 4.15 Temperature 2000 I 5 10030101 Upper Missouri Upper Missouri Lake Helena Low MT41I006_030 "PRICKLY PEAR CREEK, Highway 433 (Wylie Dr.) Crossing to Helena WWTP Discharge" RIVER 6.54 "Ammonia, Un-ionized" 2006 I 5 10030101 Upper Missouri Upper Missouri Lake Helena Low MT41I006_030 "PRICKLY PEAR CREEK, Highway 433 (Wylie Dr.) Crossing to Helena WWTP Discharge" RIVER 6.54 Temperature 2000 I 5 10030101 Upper Missouri Upper Missouri Lake Helena Low MT41I006_090 "CORBIN CREEK, headwaters to mouth (Spring Creek)" RIVER 2.82 Temperature 2000 B-1 5 10030101 Upper Missouri Upper Missouri Lake Helena Low MT41I006_141 "TENMILE CREEK, headwaters to confluence of Spring Creek" RIVER 6.72 Sedimentation/Siltation 1988 A-1 5 10030101 Upper Missouri Upper Missouri Lake Helena Low MT41I006_150 "SILVER CREEK, headwaters to T11N R4W S30 / S31 to Lake Helena" RIVER 22.1 DDE (Dichlorodiphenyldichloroethylene) 1992 B-1 5 10030101 Upper Missouri Upper Missouri Lake Helena Low MT41I006_180 "NORTH FORK WARM SPRINGS CREEK, headwaters to mouth (Warmsprings Creek)" RIVER 2.7 Organic Enrichment 2002 B-1 5 10030101 Upper Missouri Upper Missouri Lake Helena Low MT41I006_210 "JENNIES FORK, headwaters to mouth (Silver Creek)" RIVER 1.36 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10030101 Upper Missouri Upper Missouri Lake Helena Low MT41I006_210 "JENNIES FORK, headwaters to mouth (Silver Creek)" RIVER 1.36 "Phosphorus, Total" 2006 B-1 5 10030101 Upper Missouri Upper Missouri Lake Helena Low MT41I007_020 HOLTER LAKE FRESHWATER LAKE 4358 Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I007_040 HAUSER LAKE FRESHWATER LAKE 3190 Arsenic 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I007_040 HAUSER LAKE FRESHWATER LAKE 3190 DDT (Dichlorodiphenyltrichloroethane) 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I007_040 HAUSER LAKE FRESHWATER LAKE 3190 Dissolved Oxygen 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I007_040 HAUSER LAKE FRESHWATER LAKE 3190 Endosulfan sulfate 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I007_040 HAUSER LAKE FRESHWATER LAKE 3190 Endrin aldehyde 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I007_040 HAUSER LAKE FRESHWATER LAKE 3190 Mercury 2000 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I007_040 HAUSER LAKE FRESHWATER LAKE 3190 Nitrate/Nitrite (Nitrite + Nitrate as N) 2010 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41I007_040 HAUSER LAKE FRESHWATER LAKE 3190 "Phosphorus, Total" 2010 B-1 5 10030101 Upper Missouri Upper Missouri Missouri River Low MT41J001_010 "SMITH RIVER, North and South Forks to Hound Creek" RIVER 98.1 Escherichia coli (E. Coli) 2000 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J001_010 "SMITH RIVER, North and South Forks to Hound Creek" RIVER 98.1 "Phosphorus, Total" 2000 B-1 5 10030103 Smith Upper Missouri Smith Medium MT41J001_020 "SMITH RIVER, Hound Creek to mouth (Missouri River)" RIVER 24.14 "Phosphorus, Total" 2000 B-1 5 10030103 Smith Upper Missouri Smith Medium MT41J001_020 "SMITH RIVER, Hound Creek to mouth (Missouri River)" RIVER 24.14 Temperature 1988 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_011 "NORTH FORK SMITH RIVER, Lake Sutherlin to mouth (Smith River), T9N R6E S21" RIVER 23 Escherichia coli (E. Coli) 2000 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_011 "NORTH FORK SMITH RIVER, Lake Sutherlin to mouth (Smith River), T9N R6E S21" RIVER 23 "Nitrogen, Total" 2000 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_011 "NORTH FORK SMITH RIVER, Lake Sutherlin to mouth (Smith River), T9N R6E S21" RIVER 23 "Phosphorus, Total" 2000 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_020 "HOUND CREEK, Spring Creek to mouth (Smith River)" RIVER 6.71 "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_040 "BEAVER CREEK, headwaters to mouth (Smith River)" RIVER 20.58 "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_040 "BEAVER CREEK, headwaters to mouth (Smith River)" RIVER 20.58 "Phosphorus, Total" 2006 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_040 "BEAVER CREEK, headwaters to mouth (Smith River)" RIVER 20.58 Sedimentation/Siltation 1990 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_050 "BENTON GULCH, headwaters to mouth (Smith River)" RIVER 13.41 Escherichia coli (E. Coli) 2000 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_060 "ELK CREEK, headwaters to mouth (Camas Creek)" RIVER 10.41 "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_060 "ELK CREEK, headwaters to mouth (Camas Creek)" RIVER 10.41 "Phosphorus, Total" 2006 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_060 "ELK CREEK, headwaters to mouth (Camas Creek)" RIVER 10.41 Sedimentation/Siltation 1990 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_060 "ELK CREEK, headwaters to mouth (Camas Creek)" RIVER 10.41 Temperature 1988 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_070 "THOMPSON GULCH, headwaters to mouth (Smith River)" RIVER 10.81 "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_070 "THOMPSON GULCH, headwaters to mouth (Smith River)" RIVER 10.81 Sedimentation/Siltation 1988 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_081 "NEWLAN CREEK, Newlan Reservoir to mouth (Smith River)" RIVER 9.01 Escherichia coli (E. Coli) 2010 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_081 "NEWLAN CREEK, Newlan Reservoir to mouth (Smith River)" RIVER 9.01 Sedimentation/Siltation 1988 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_081 "NEWLAN CREEK, Newlan Reservoir to mouth (Smith River)" RIVER 9.01 Temperature 2006 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_082 "NEWLAN CREEK, headwaters to Newlan Reservoir" RIVER 13.3 Cadmium 2006 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_082 "NEWLAN CREEK, headwaters to Newlan Reservoir" RIVER 13.3 "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_082 "NEWLAN CREEK, headwaters to Newlan Reservoir" RIVER 13.3 "Phosphorus, Total" 2006 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_082 "NEWLAN CREEK, headwaters to Newlan Reservoir" RIVER 13.3 Sedimentation/Siltation 1988 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_100 "LITTLE CAMAS CREEK, headwaters to mouth (Camas Creek)" RIVER 3.82 "Nitrogen, Total" 2006 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_100 "LITTLE CAMAS CREEK, headwaters to mouth (Camas Creek)" RIVER 3.82 Temperature 1990 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_110 "CAMAS CREEK, junction of Big and Little Camas Creeks to mouth (Smith River)" RIVER 14.28 Escherichia coli (E. Coli) 2000 B-1 5 10030103 Smith Upper Missouri Smith Low MT41J002_120 "MOOSE CREEK, headwaters to mouth (Sheep Creek)" RIVER 11.63 Aluminum 2016 B-1 "5,5N" 10030103 Smith Upper Missouri Smith Low MT41K002_040 "HUBER COULEE, headwaters to mouth (Sun River Valley Ditch)" RIVER 3.6 Escherichia coli (E. Coli) 2012 B-1 5 10030104 Sun Upper Missouri Sun Low MT41K004_030 FREEZEOUT LAKE FRESHWATER LAKE 3013.2 "Phosphorus, Total" 2000 B-2 5 10030205 Teton Marias Sun Low MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" RIVER 17.6 "Ammonia, Total" 1990 B-1 5 10030202 Cut Bank Marias Cut Bank - Two Medicine Low MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" RIVER 17.6 Chloride 1990 B-1 5 10030202 Cut Bank Marias Cut Bank - Two Medicine Low MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" RIVER 17.6 Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-1 5 10030202 Cut Bank Marias Cut Bank - Two Medicine Low MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" RIVER 17.6 "Phosphorus, Total" 1990 B-1 5 10030202 Cut Bank Marias Cut Bank - Two Medicine Low MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" RIVER 17.6 Specific Conductivity 1990 B-1 5 10030202 Cut Bank Marias Cut Bank - Two Medicine Low MT41L001_010 "OLD MAIDS COULEE, headwaters to mouth (Cutbank Creek)" RIVER 17.6 Total Dissolved Solids (TDS) 1990 B-1 5 10030202 Cut Bank Marias Cut Bank - Two Medicine Low MT41L001_040 "CUT BANK CREEK, Blackfeet Reservation boundary to mouth (Marias River)" RIVER 21.07 Nitrate/Nitrite (Nitrite + Nitrate as N) 1988 B-2 5 10030202 Cut Bank Marias Cut Bank - Two Medicine Low MT41L001_040 "CUT BANK CREEK, Blackfeet Reservation boundary to mouth (Marias River)" RIVER 21.07 Temperature 1990 B-2 5 10030202 Cut Bank Marias Cut Bank - Two Medicine Low MT41M002_080 "BIRCH CREEK, Blacktail Creek to mouth (Two Medicine River)" RIVER 37.2 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10030201 Two Medicine Marias Cut Bank - Two Medicine Low MT41M002_110 "DUPUYER CREEK, confluence of South Fork Dupuyer Creek and Middle Fork Dupuyer Creek to the mouth (Birch Creek)" RIVER 39.28 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 "5,5N" 10030201 Two Medicine Marias Cut Bank - Two Medicine Low MT41M002_110 "DUPUYER CREEK, confluence of South Fork Dupuyer Creek and Middle Fork Dupuyer Creek to the mouth (Birch Creek)" RIVER 39.28 Sedimentation/Siltation 2006 B-1 "5,5N" 10030201 Two Medicine Marias Cut Bank - Two Medicine Low MT41M002_110 "DUPUYER CREEK, confluence of South Fork Dupuyer Creek and Middle Fork Dupuyer Creek to the mouth (Birch Creek)" RIVER 39.28 Temperature 1992 B-1 "5,5N" 10030201 Two Medicine Marias Cut Bank - Two Medicine Low MT41P002_030 "PONDERA COULEE, headwaters to mouth (Marias River)" RIVER 135.95 Salinity 1988 B-2 5 10030203 Marias Marias Marias - Willow Low MT41P002_050 "CORRAL CREEK, headwaters to mouth (Cottonwood Creek)" RIVER 22.98 "Phosphorus, Total" 2000 B-2 5 10030203 Marias Marias Marias - Willow Low MT41P004_020 "EAGLE CREEK, headwaters to mouth (Lake Elwell (Tiber Reservoir))" RIVER 52.65 "Nitrogen, Total" 2000 B-2 5 10030204 Willow Marias Marias - Willow Low MT41P004_020 "EAGLE CREEK, headwaters to mouth (Lake Elwell (Tiber Reservoir))" RIVER 52.65 "Phosphorus, Total" 2000 B-2 5 10030204 Willow Marias Marias - Willow Low MT41P005_010 OILMONT WETLAND FRESHWATER LAKE 21 Arsenic 2000 B-2 5 10030204 Willow Marias Marias - Willow Low MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" RIVER 6.99 "Chromium, Total" 1992 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" RIVER 6.99 Mercury 1992 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" RIVER 6.99 Polychlorinated Biphenyls (PCBs) 2012 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" RIVER 6.99 Sedimentation/Siltation 1988 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" RIVER 6.99 Selenium 1992 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_011 "MISSOURI RIVER, Sun River to Rainbow Dam" RIVER 6.99 Turbidity 2000 B-2 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" RIVER 9.12 Arsenic 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" RIVER 9.12 Copper 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" RIVER 9.12 Polychlorinated Biphenyls (PCBs) 2012 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" RIVER 9.12 Sedimentation/Siltation 1988 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" RIVER 9.12 Temperature 2000 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_013 "MISSOURI RIVER, Rainbow Dam to Morony Dam" RIVER 9.12 Turbidity 2000 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" RIVER 54.62 Aluminum 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" RIVER 54.62 Arsenic 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" RIVER 54.62 Cadmium 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" RIVER 54.62 Copper 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" RIVER 54.62 Iron 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" RIVER 54.62 Lead 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" RIVER 54.62 "Nitrogen, Total" 1988 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Medium MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" RIVER 54.62 "Phosphorus, Total" 1988 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Medium MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" RIVER 54.62 Sedimentation/Siltation 1988 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_014 "MISSOURI RIVER, Morony Dam to Marias River" RIVER 54.62 Zinc 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_021 "MISSOURI RIVER, Little Prickly Pear Creek to Sheep Creek" RIVER 20.93 Arsenic 1992 B-1 "5,5N" 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_021 "MISSOURI RIVER, Little Prickly Pear Creek to Sheep Creek" RIVER 20.93 "Nitrogen, Total" 1988 B-1 "5,5N" 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Medium MT41Q001_021 "MISSOURI RIVER, Little Prickly Pear Creek to Sheep Creek" RIVER 20.93 Sedimentation/Siltation 1988 B-1 "5,5N" 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q001_022 "MISSOURI RIVER, Sheep Creek to Sun River" RIVER 65.3 Sedimentation/Siltation 1988 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri River Low MT41Q002_010 "LAKE CREEK, headwaters to mouth (Benton Lake)" RIVER 19.03 Cadmium 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Benton Lake Low MT41Q002_010 "LAKE CREEK, headwaters to mouth (Benton Lake)" RIVER 19.03 Salinity 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Benton Lake Low MT41Q002_010 "LAKE CREEK, headwaters to mouth (Benton Lake)" RIVER 19.03 Sedimentation/Siltation 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Benton Lake Low MT41Q002_010 "LAKE CREEK, headwaters to mouth (Benton Lake)" RIVER 19.03 Selenium 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Benton Lake Low MT41Q002_010 "LAKE CREEK, headwaters to mouth (Benton Lake)" RIVER 19.03 Zinc 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Benton Lake Low MT41Q002_020 "COTTONWOOD CREEK, 1 mile above Stockett to mouth (Sand Coulee Creek-Missouri River)" RIVER 4.32 Arsenic 2016 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri Cascade Low MT41Q002_020 "COTTONWOOD CREEK, 1 mile above Stockett to mouth (Sand Coulee Creek-Missouri River)" RIVER 4.32 Copper 2016 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri Cascade Low MT41Q002_020 "COTTONWOOD CREEK, 1 mile above Stockett to mouth (Sand Coulee Creek-Missouri River)" RIVER 4.32 Lead 2016 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri Cascade Low MT41Q002_030 "NUMBER FIVE COULEE, headwaters to mouth (Cottonwood Creek)" RIVER 13.68 Lead 1988 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri Cascade Low MT41Q002_040 "SAND COULEE CREEK, confluence with Cottonwood Creek to the mouth (Missouri River)" RIVER 18.63 Lead 1988 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri Cascade Low MT41Q002_040 "SAND COULEE CREEK, confluence with Cottonwood Creek to the mouth (Missouri River)" RIVER 18.63 Salinity 2000 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri Cascade Low MT41Q002_040 "SAND COULEE CREEK, confluence with Cottonwood Creek to the mouth (Missouri River)" RIVER 18.63 Zinc 1988 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri Cascade Low MT41Q002_050 "BOX ELDER CREEK, Spring Creek to mouth (Missouri River)" RIVER 17.47 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri Choteau Low MT41Q002_050 "BOX ELDER CREEK, Spring Creek to mouth (Missouri River)" RIVER 17.47 Sedimentation/Siltation 1992 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Missouri Choteau Low MT41Q003_010 "DEARBORN RIVER, Falls Creek to mouth (Missouri River)" RIVER 48.26 Temperature 1990 B-1 5 10030102 Upper Missouri-Dearborn Upper Missouri Dearborn Low MT41Q005_020 BENTON LAKE FRESHWATER LAKE 5345.1 "Nitrogen, Total" 2000 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Benton Lake Low MT41Q005_020 BENTON LAKE FRESHWATER LAKE 5345.1 Salinity 2006 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Benton Lake Low MT41Q005_020 BENTON LAKE FRESHWATER LAKE 5345.1 Selenium 2000 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Benton Lake Low MT41Q005_020 BENTON LAKE FRESHWATER LAKE 5345.1 Sulfate 2000 B-3 5 10030102 Upper Missouri-Dearborn Upper Missouri Benton Lake Low MT41R001_010 "COFFEE CREEK, headwaters to mouth (Arrow Creek)" RIVER 52.13 Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 C-3 5 10040102 Arrow Fort Peck Lake Judith - Arrow Low MT41R001_010 "COFFEE CREEK, headwaters to mouth (Arrow Creek)" RIVER 52.13 Selenium 2006 C-3 5 10040102 Arrow Fort Peck Lake Judith - Arrow Low MT41R001_010 "COFFEE CREEK, headwaters to mouth (Arrow Creek)" RIVER 52.13 Total Dissolved Solids (TDS) 2006 C-3 5 10040102 Arrow Fort Peck Lake Judith - Arrow Low MT41R001_020 "ARROW CREEK, Surprise Creek to mouth (Missouri River)" RIVER 69.7 Iron 2006 C-3 "5,5N" 10040102 Arrow Fort Peck Lake Judith - Arrow Low MT41S001_020 "JUDITH RIVER, Ross Fork to Big Spring Creek" RIVER 16.15 Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-1 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S001_020 "JUDITH RIVER, Ross Fork to Big Spring Creek" RIVER 16.15 Sedimentation/Siltation 1988 B-1 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_010 "DRY WOLF CREEK, headwaters to mouth (Wolf Creek)" RIVER 34.55 Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_010 "DRY WOLF CREEK, headwaters to mouth (Wolf Creek)" RIVER 34.55 "Nitrogen, Total" 1990 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_010 "DRY WOLF CREEK, headwaters to mouth (Wolf Creek)" RIVER 34.55 "Phosphorus, Total" 1990 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_010 "DRY WOLF CREEK, headwaters to mouth (Wolf Creek)" RIVER 34.55 Salinity 1988 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_020 "WOLF CREEK, Dry Wolf Creek to mouth (Judith River)" RIVER 45.29 Iron 2006 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_020 "WOLF CREEK, Dry Wolf Creek to mouth (Judith River)" RIVER 45.29 Selenium 2006 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_020 "WOLF CREEK, Dry Wolf Creek to mouth (Judith River)" RIVER 45.29 Total Dissolved Solids (TDS) 1992 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_030 "WARM SPRING CREEK, 5 miles upstream to mouth (Judith River)" RIVER 10.74 Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_030 "WARM SPRING CREEK, 5 miles upstream to mouth (Judith River)" RIVER 10.74 "Nitrogen, Total" 2000 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_030 "WARM SPRING CREEK, 5 miles upstream to mouth (Judith River)" RIVER 10.74 "Phosphorus, Total" 2000 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_030 "WARM SPRING CREEK, 5 miles upstream to mouth (Judith River)" RIVER 10.74 Sedimentation/Siltation 1988 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_050 "SAGE CREEK, headwaters to mouth (Judith River)" RIVER 70.08 Iron 2006 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_050 "SAGE CREEK, headwaters to mouth (Judith River)" RIVER 70.08 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_050 "SAGE CREEK, headwaters to mouth (Judith River)" RIVER 70.08 "Nitrogen, Total" 2006 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_070 "ROSS FORK JUDITH RIVER, headwaters to mouth (Judith River)" RIVER 64.23 Biochemical oxygen demand (BOD) 2006 B-1 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_070 "ROSS FORK JUDITH RIVER, headwaters to mouth (Judith River)" RIVER 64.23 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_070 "ROSS FORK JUDITH RIVER, headwaters to mouth (Judith River)" RIVER 64.23 Sedimentation/Siltation 1988 B-1 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_080 "SOUTH FORK JUDITH RIVER, headwaters to mouth" RIVER 21.16 Sedimentation/Siltation 1992 B-1 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_100 "LAST CHANCE CREEK, headwaters to mouth (Moccasin Creek)" RIVER 6.17 Cyanide 2004 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_100 "LAST CHANCE CREEK, headwaters to mouth (Moccasin Creek)" RIVER 6.17 Iron 2004 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_100 "LAST CHANCE CREEK, headwaters to mouth (Moccasin Creek)" RIVER 6.17 Selenium 2004 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S002_100 "LAST CHANCE CREEK, headwaters to mouth (Moccasin Creek)" RIVER 6.17 Thallium 2004 C-3 5 10040103 Judith Fort Peck Lake Judith - Arrow Low MT41S004_040 "CASINO CREEK, headwaters to mouth (Big Spring Creek)" RIVER 13.56 "Nitrogen, Total" 1992 B-1 5 10040103 Judith Fort Peck Lake Big Springs Low MT41S004_040 "CASINO CREEK, headwaters to mouth (Big Spring Creek)" RIVER 13.56 "Phosphorus, Total" 1992 B-1 5 10040103 Judith Fort Peck Lake Big Springs Low MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" RIVER 19.97 Dissolved Oxygen 1992 B-1 5 10040103 Judith Fort Peck Lake Big Springs Low MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" RIVER 19.97 Nitrate/Nitrite (Nitrite + Nitrate as N) 1992 B-1 5 10040103 Judith Fort Peck Lake Big Springs Low MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" RIVER 19.97 "Nitrogen, Total" 1992 B-1 5 10040103 Judith Fort Peck Lake Big Springs Low MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" RIVER 19.97 "Phosphorus, Total" 1992 B-1 5 10040103 Judith Fort Peck Lake Big Springs Low MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" RIVER 19.97 Sedimentation/Siltation 1992 B-1 5 10040103 Judith Fort Peck Lake Big Springs Low MT41S004_052 "COTTONWOOD CREEK, county road at T14N R18E S18 to mouth (Big Spring Creek)" RIVER 19.97 Total Kjehldahl Nitrogen (TKN) 1992 B-1 5 10040103 Judith Fort Peck Lake Big Springs Low MT41T001_010 "MISSOURI RIVER, the Marias River to Bullwhacker Creek" RIVER 102.05 Copper 2000 B-3 5 10040101 Bullwhacker-Dog Fort Peck Lake Missouri River Low MT41T001_010 "MISSOURI RIVER, the Marias River to Bullwhacker Creek" RIVER 102.05 Lead 2000 B-3 5 10040101 Bullwhacker-Dog Fort Peck Lake Missouri River Low MT41T002_020 "DOG CREEK, Cutbank Creek to mouth (Missouri River)" RIVER 26.03 Nitrate/Nitrite (Nitrite + Nitrate as N) 2004 C-3 5 10040101 Bullwhacker-Dog Fort Peck Lake Bullwhacker - Dog Low MT41T002_020 "DOG CREEK, Cutbank Creek to mouth (Missouri River)" RIVER 26.03 Sedimentation/Siltation 2004 C-3 5 10040101 Bullwhacker-Dog Fort Peck Lake Bullwhacker - Dog Low MT41U001_011 "BELT CREEK, headwaters to Big Otter Creek" RIVER 50.77 Salinity 2006 B-1 5 10030105 Belt Upper Missouri Belt Low MT41U001_011 "BELT CREEK, headwaters to Big Otter Creek" RIVER 50.77 Sedimentation/Siltation 1988 B-1 5 10030105 Belt Upper Missouri Belt Low MT41U001_012 "BELT CREEK, Big Otter Creek to mouth (Missouri River)" RIVER 39.44 Aluminum 2016 B-2 5 10030105 Belt Upper Missouri Belt Low MT41U001_012 "BELT CREEK, Big Otter Creek to mouth (Missouri River)" RIVER 39.44 Sedimentation/Siltation 1988 B-2 5 10030105 Belt Upper Missouri Belt Low MT41U002_010 "CARPENTER CREEK, headwaters to mouth (Belt Creek)" RIVER 6.05 Mercury 1988 B-1 5 10030105 Belt Upper Missouri Belt Low MT41U002_030 "DRY FORK BELT CREEK, headwaters to mouth (Belt Creek)" RIVER 18.88 Sedimentation/Siltation 2000 B-1 5 10030105 Belt Upper Missouri Belt Low MT41U002_040 "LITTLE BELT CREEK, three miles upstream to mouth (Belt Creek)" RIVER 3.24 "Nitrogen, Total" 1988 B-1 5 10030105 Belt Upper Missouri Belt Low MT41U002_040 "LITTLE BELT CREEK, three miles upstream to mouth (Belt Creek)" RIVER 3.24 "Phosphorus, Total" 1988 B-1 5 10030105 Belt Upper Missouri Belt Low MT41U002_040 "LITTLE BELT CREEK, three miles upstream to mouth (Belt Creek)" RIVER 3.24 Sedimentation/Siltation 1988 B-1 5 10030105 Belt Upper Missouri Belt Low MT41U002_050 "BIG OTTER CREEK, headwaters to mouth (Belt Creek)" RIVER 33.49 Nitrate/Nitrite (Nitrite + Nitrate as N) 2000 B-1 5 10030105 Belt Upper Missouri Belt Low MT41U002_050 "BIG OTTER CREEK, headwaters to mouth (Belt Creek)" RIVER 33.49 Sedimentation/Siltation 1996 B-1 5 10030105 Belt Upper Missouri Belt Low MT42B001_010 "TONGUE RIVER, Wyoming border to Tongue River Reservoir" RIVER 5.9 Iron 2008 B-2 5 10090101 Upper Tongue Tongue Tongue Low MT42B002_031 "HANGING WOMAN CREEK, Stroud Creek to mouth (Tongue River)" RIVER 18.27 Iron 1996 C-3 "5,5N" 10090101 Upper Tongue Tongue Tongue Low MT42B002_031 "HANGING WOMAN CREEK, Stroud Creek to mouth (Tongue River)" RIVER 18.27 Salinity 2008 C-3 "5,5N" 10090101 Upper Tongue Tongue Tongue Low MT42B002_031 "HANGING WOMAN CREEK, Stroud Creek to mouth (Tongue River)" RIVER 18.27 Sedimentation/Siltation 2000 C-3 "5,5N" 10090101 Upper Tongue Tongue Tongue Low MT42B002_032 "HANGING WOMAN CREEK, Wyoming border to Stroud Creek" RIVER 31.37 Salinity 1996 C-3 "5,5N" 10090101 Upper Tongue Tongue Tongue Low MT42B003_010 TONGUE RIVER RESERVOIR FRESHWATER LAKE 2158.5 Dissolved Oxygen 2008 B-2 5 10090101 Upper Tongue Tongue Tongue Low MT42B003_010 TONGUE RIVER RESERVOIR FRESHWATER LAKE 2158.5 Sediment 2008 B-2 5 10090101 Upper Tongue Tongue Tongue Low MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" RIVER 20.9 Cadmium 2008 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" RIVER 20.9 Copper 2008 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" RIVER 20.9 Iron 2008 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" RIVER 20.9 Lead 2008 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" RIVER 20.9 Nickel 2008 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" RIVER 20.9 Salinity 2008 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" RIVER 20.9 Sediment 2008 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_011 "TONGUE RIVER, Twelve Mile Dam to mouth (Yellowstone River)" RIVER 20.9 Zinc 2008 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_013 "TONGUE RIVER, Hanging Woman Creek to Beaver Creek" RIVER 74.97 Iron 1996 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_013 "TONGUE RIVER, Hanging Woman Creek to Beaver Creek" RIVER 74.97 Sediment 1996 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_014 "TONGUE RIVER, Beaver Creek to Twelve Mile Dam, T6N R48E S29" RIVER 72 Iron 1996 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_014 "TONGUE RIVER, Beaver Creek to Twelve Mile Dam, T6N R48E S29" RIVER 72 Sediment 1996 B-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C001_014 "TONGUE RIVER, Beaver Creek to Twelve Mile Dam, T6N R48E S29" RIVER 72 Specific Conductivity 2020 B-3 5 10090102 Lower Tongue Tongue Tongue High MT42C002_020 "OTTER CREEK, headwaters to mouth (Tongue River)" RIVER 108.1 Iron 1996 C-3 "5,5N" 10090102 Lower Tongue Tongue Tongue Medium MT42C002_020 "OTTER CREEK, headwaters to mouth (Tongue River)" RIVER 108.1 Salinity 1996 C-3 "5,5N" 10090102 Lower Tongue Tongue Tongue Low MT42C002_061 "PUMPKIN CREEK, headwaters to Little Pumpkin Creek" RIVER 87.68 Salinity 1996 C-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C002_061 "PUMPKIN CREEK, headwaters to Little Pumpkin Creek" RIVER 87.68 Temperature 1996 C-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C002_062 "PUMPKIN CREEK, Little Pumpkin Creek to the mouth (Tongue River)" RIVER 92.19 Salinity 1996 C-3 5 10090102 Lower Tongue Tongue Tongue Low MT42C002_062 "PUMPKIN CREEK, Little Pumpkin Creek to the mouth (Tongue River)" RIVER 92.19 Temperature 1996 C-3 5 10090102 Lower Tongue Tongue Tongue Low MT42I001_010 "LITTLE POWDER RIVER, Wyoming border to mouth (Powder River)" RIVER 63.31 Salinity 1996 C-3 5 10090208 Little Powder Powder Powder Low MT42J001_010 "POWDER RIVER, Wyoming border to Little Powder River" RIVER 78.21 Salinity 2008 C-3 5 10090207 Middle Powder Powder Powder Low MT42J003_011 "POWDER RIVER, Little Powder River to Mizpah Creek" RIVER 99 Salinity 1996 C-3 5 10090209 Lower Powder Powder Powder Low MT42J003_012 "POWDER RIVER, Mizpah Creek to mouth (Yellowstone River)" RIVER 45.33 Salinity 1996 C-3 5 10090209 Lower Powder Powder Powder Low MT42J004_010 "STUMP CREEK, headwaters to mouth (Powder River)" RIVER 29.77 Salinity 2008 C-3 "5,5N" 10090209 Lower Powder Powder Powder Low MT42J005_011 "MIZPAH CREEK, headwaters to Corral Creek" RIVER 131.98 Salinity 2008 C-3 5 10090210 Mizpah Powder Powder Low MT42J005_012 "MIZPAH CREEK, Corral Creek to the mouth (Powder River)" RIVER 22.98 Salinity 2010 C-3 5 10090210 Mizpah Powder Powder Low MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" RIVER 88.73 Copper 1992 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone River Low MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" RIVER 88.73 Lead 1992 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone River Low MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" RIVER 88.73 Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone River Medium MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" RIVER 88.73 pH 1990 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone River Low MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" RIVER 88.73 Sediment 1990 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone River Low MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" RIVER 88.73 Total Dissolved Solids (TDS) 1990 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone River Low MT42K001_010 "YELLOWSTONE RIVER, the Cartersville Diversion Dam to Powder River" RIVER 88.73 Zinc 1992 B-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Yellowstone River Low MT42K002_020 "HARRIS CREEK, headwaters to mouth (Yellowstone River)" RIVER 27.39 "Phosphorus, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_020 "HARRIS CREEK, headwaters to mouth (Yellowstone River)" RIVER 27.39 Sediment 1992 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" RIVER 15.28 Copper 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" RIVER 15.28 Iron 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" RIVER 15.28 Lead 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" RIVER 15.28 Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" RIVER 15.28 "Nitrogen, Total" 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_030 "SUNDAY CREEK, the North and South Forks to mouth (Yellowstone River)" RIVER 15.28 "Phosphorus, Total" 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_040 "MUSTER CREEK, headwaters to mouth (Yellowstone River)" RIVER 31.39 Nitrate/Nitrite (Nitrite + Nitrate as N) 1992 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_040 "MUSTER CREEK, headwaters to mouth (Yellowstone River)" RIVER 31.39 "Phosphorus, Total" 1992 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_040 "MUSTER CREEK, headwaters to mouth (Yellowstone River)" RIVER 31.39 Sediment 1992 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_060 "DEADMAN CREEK, headwaters to mouth (North Fork Sunday Creek)" RIVER 17.28 "Nitrogen, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_060 "DEADMAN CREEK, headwaters to mouth (North Fork Sunday Creek)" RIVER 17.28 "Phosphorus, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_070 "STELLAR CREEK, headwaters to mouth (Little Porcupine Creek)" RIVER 42.96 Cadmium 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_070 "STELLAR CREEK, headwaters to mouth (Little Porcupine Creek)" RIVER 42.96 pH 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_070 "STELLAR CREEK, headwaters to mouth (Little Porcupine Creek)" RIVER 42.96 "Phosphorus, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_080 "NORTH FORK SUNDAY CREEK, Custer/Rosebud County border to mouth (Sunday Creek)" RIVER 33.76 Sedimentation/Siltation 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_080 "NORTH FORK SUNDAY CREEK, Custer/Rosebud County border to mouth (Sunday Creek)" RIVER 33.76 Sodium 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_080 "NORTH FORK SUNDAY CREEK, Custer/Rosebud County border to mouth (Sunday Creek)" RIVER 33.76 Specific Conductivity 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_080 "NORTH FORK SUNDAY CREEK, Custer/Rosebud County border to mouth (Sunday Creek)" RIVER 33.76 Total Dissolved Solids (TDS) 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_090 "SARPY CREEK, Crow Indian Reservation Boundary to mouth (Yellowstone River)" RIVER 89.35 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_090 "SARPY CREEK, Crow Indian Reservation Boundary to mouth (Yellowstone River)" RIVER 89.35 "Nitrogen, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_090 "SARPY CREEK, Crow Indian Reservation Boundary to mouth (Yellowstone River)" RIVER 89.35 "Phosphorus, Total" 2006 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" RIVER 37.43 Aluminum 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" RIVER 37.43 Iron 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" RIVER 37.43 Nitrate/Nitrite (Nitrite + Nitrate as N) 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" RIVER 37.43 "Nitrogen, Total" 1994 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" RIVER 37.43 "Phosphorus, Total" 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" RIVER 37.43 Specific Conductivity 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_110 "EAST FORK ARMELLS CREEK, East Rosebud Mine outfall 020 (45.85887N, -106.6621W) to mouth (Armells Creek)" RIVER 37.43 Total Dissolved Solids (TDS) 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_120 "WEST FORK ARMELLS CREEK, headwaters to mouth (Armells Creek)" RIVER 33.99 Aluminum 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_120 "WEST FORK ARMELLS CREEK, headwaters to mouth (Armells Creek)" RIVER 33.99 Iron 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_160 "LITTLE PORCUPINE CREEK, headwaters to mouth (Yellowstone River)" RIVER 118.8 Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_160 "LITTLE PORCUPINE CREEK, headwaters to mouth (Yellowstone River)" RIVER 118.8 "Nitrogen, Total" 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_160 "LITTLE PORCUPINE CREEK, headwaters to mouth (Yellowstone River)" RIVER 118.8 "Phosphorus, Total" 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_160 "LITTLE PORCUPINE CREEK, headwaters to mouth (Yellowstone River)" RIVER 118.8 Total Dissolved Solids (TDS) 1990 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_180 "ARMELLS CREEK, confluence of East and West Forks to mouth (Yellowstone River)" RIVER 28.76 Aluminum 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42K002_180 "ARMELLS CREEK, confluence of East and West Forks to mouth (Yellowstone River)" RIVER 28.76 Iron 2018 C-3 5 10100001 Lower Yellowstone-Sunday Lower Yellowstone Middle Yellowstone Tributaries Low MT42L001_010 "PENNEL CREEK, headwaters to mouth (O'Fallon Creek)" RIVER 65.97 Total Dissolved Solids (TDS) 1988 C-3 5 10100005 O'Fallon Lower Yellowstone O'Fallon Low MT42L001_020 "SANDSTONE CREEK, headwaters to mouth (O'Fallon Creek)" RIVER 72.78 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100005 O'Fallon Lower Yellowstone O'Fallon Low MT42L001_020 "SANDSTONE CREEK, headwaters to mouth (O'Fallon Creek)" RIVER 72.78 "Nitrogen, Total" 2006 C-3 5 10100005 O'Fallon Lower Yellowstone O'Fallon Low MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" RIVER 53.67 "Chromium, Total" 1992 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone River Low MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" RIVER 53.67 Copper 1992 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone River Low MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" RIVER 53.67 Lead 1992 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone River Low MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" RIVER 53.67 "Nitrogen, Total" 1990 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone River Medium MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" RIVER 53.67 pH 1990 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone River Low MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" RIVER 53.67 "Phosphorus, Total" 1990 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone River Medium MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" RIVER 53.67 Sedimentation/Siltation 1988 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone River Low MT42M001_011 "YELLOWSTONE RIVER, Lower Yellowstone Diversion Dam to North Dakota border" RIVER 53.67 Total Dissolved Solids (TDS) 1988 B-3 5 10100004 Lower Yellowstone Lower Yellowstone Yellowstone River Low MT42M002_020 "FOURMILE CREEK, headwaters to North Dakota border" RIVER 29.74 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_020 "FOURMILE CREEK, headwaters to North Dakota border" RIVER 29.74 "Nitrogen, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_020 "FOURMILE CREEK, headwaters to North Dakota border" RIVER 29.74 Total Dissolved Solids (TDS) 1988 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" RIVER 33.37 Copper 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" RIVER 33.37 Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" RIVER 33.37 Lead 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" RIVER 33.37 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" RIVER 33.37 "Nitrogen, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" RIVER 33.37 "Phosphorus, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" RIVER 33.37 Sediment 1988 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_030 "FIRST HAY CREEK, headwaters to mouth (Yellowstone River)" RIVER 33.37 Total Dissolved Solids (TDS) 1988 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_040 "LONE TREE CREEK, confluence of North Fork to mouth (Yellowstone River)" RIVER 17.27 Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_040 "LONE TREE CREEK, confluence of North Fork to mouth (Yellowstone River)" RIVER 17.27 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_040 "LONE TREE CREEK, confluence of North Fork to mouth (Yellowstone River)" RIVER 17.27 Sediment 1988 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" RIVER 49.85 Arsenic 1994 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" RIVER 49.85 Iron 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" RIVER 49.85 Lead 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" RIVER 49.85 Mercury 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" RIVER 49.85 "Nitrogen, Total" 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" RIVER 49.85 "Phosphorus, Total" 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" RIVER 49.85 Sediment 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" RIVER 49.85 Sulfate 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_051 "FOX CREEK, headwaters to mouth (Yellowstone River), T22N R59E S19" RIVER 49.85 Total Dissolved Solids (TDS) 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" RIVER 20.32 Arsenic 1994 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" RIVER 20.32 Iron 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" RIVER 20.32 Lead 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" RIVER 20.32 Mercury 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" RIVER 20.32 "Nitrogen, Total" 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" RIVER 20.32 "Phosphorus, Total" 2006 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" RIVER 20.32 Sediment 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" RIVER 20.32 Sulfate 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_052 "NORTH FORK FOX CREEK, headwaters to mouth (Fox Creek), T22N R58E S21" RIVER 20.32 Total Dissolved Solids (TDS) 1988 B-2 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_060 "O'BRIEN CREEK, North Dakota border to mouth (Yellowstone River)" RIVER 15.53 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_060 "O'BRIEN CREEK, North Dakota border to mouth (Yellowstone River)" RIVER 15.53 Selenium 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_070 "CRANE CREEK, headwaters to mouth (Yellowstone River, T21N R58E S23)" RIVER 24.25 Sedimentation/Siltation 1988 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_100 "COTTONWOOD CREEK, headwaters to mouth (Yellowstone River)" RIVER 21.99 Cadmium 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_100 "COTTONWOOD CREEK, headwaters to mouth (Yellowstone River)" RIVER 21.99 Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_110 "BURNS CREEK, headwaters to mouth (Yellowstone River)" RIVER 53.66 Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_110 "BURNS CREEK, headwaters to mouth (Yellowstone River)" RIVER 53.66 "Nitrogen, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_110 "BURNS CREEK, headwaters to mouth (Yellowstone River)" RIVER 53.66 "Phosphorus, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_110 "BURNS CREEK, headwaters to mouth (Yellowstone River)" RIVER 53.66 Sediment 1992 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" RIVER 55.89 Cadmium 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" RIVER 55.89 "Chromium, Total" 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" RIVER 55.89 Copper 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" RIVER 55.89 Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" RIVER 55.89 Lead 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" RIVER 55.89 Nickel 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" RIVER 55.89 Sediment 1990 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" RIVER 55.89 Selenium 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_130 "GLENDIVE CREEK, headwaters to mouth (Yellowstone River)" RIVER 55.89 Zinc 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_141 "CEDAR CREEK, 26 miles upstream to mouth (Yellowstone River)" RIVER 27.49 Arsenic 2000 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_141 "CEDAR CREEK, 26 miles upstream to mouth (Yellowstone River)" RIVER 27.49 Copper 2000 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_141 "CEDAR CREEK, 26 miles upstream to mouth (Yellowstone River)" RIVER 27.49 Iron 2000 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_141 "CEDAR CREEK, 26 miles upstream to mouth (Yellowstone River)" RIVER 27.49 Lead 2000 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_142 "CEDAR CREEK, tributary confluence at 12N 57E S35 to tributary confluence at 13N 56E S27" RIVER 20.13 Copper 2006 C-3 "5,5N" 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_142 "CEDAR CREEK, tributary confluence at 12N 57E S35 to tributary confluence at 13N 56E S27" RIVER 20.13 Iron 2006 C-3 "5,5N" 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_142 "CEDAR CREEK, tributary confluence at 12N 57E S35 to tributary confluence at 13N 56E S27" RIVER 20.13 Lead 2006 C-3 "5,5N" 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_142 "CEDAR CREEK, tributary confluence at 12N 57E S35 to tributary confluence at 13N 56E S27" RIVER 20.13 Selenium 2006 C-3 "5,5N" 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_150 "CABIN CREEK, headwaters to mouth (Yellowstone River)" RIVER 102.54 Dissolved Oxygen 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_150 "CABIN CREEK, headwaters to mouth (Yellowstone River)" RIVER 102.54 "Nitrogen, Total" 1990 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_150 "CABIN CREEK, headwaters to mouth (Yellowstone River)" RIVER 102.54 Sedimentation/Siltation 1994 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_180 "SEARS CREEK, headwaters to mouth (Yellowstone River)" RIVER 15.15 Copper 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_180 "SEARS CREEK, headwaters to mouth (Yellowstone River)" RIVER 15.15 Iron 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_180 "SEARS CREEK, headwaters to mouth (Yellowstone River)" RIVER 15.15 Lead 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT42M002_180 "SEARS CREEK, headwaters to mouth (Yellowstone River)" RIVER 15.15 Sediment 2006 C-3 5 10100004 Lower Yellowstone Lower Yellowstone Lower Yellowstone Low MT43A002_020 "ANTELOPE CREEK, headwaters to mouth (Shields River)" RIVER 10.37 Sediment 1992 B-1 5 10070003 Shields Upper Yellowstone Shields Low MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" RIVER 4.79 "Ammonia, Total" 1990 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone River Low MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" RIVER 4.79 Arsenic 1992 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone River Low MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" RIVER 4.79 Copper 1992 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone River Low MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" RIVER 4.79 Lead 1992 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone River Low MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" RIVER 4.79 Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone River Medium MT43B001_010 "YELLOWSTONE RIVER, Yellowstone Park Boundary to Reese Creek" RIVER 4.79 Sedimentation/Siltation 1990 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone River Low MT43B001_011 "YELLOWSTONE RIVER, Wyoming border to Yellowstone National Park Boundary" RIVER 8.68 "Ammonia, Un-ionized" 2006 A-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone River Low MT43B001_011 "YELLOWSTONE RIVER, Wyoming border to Yellowstone National Park Boundary" RIVER 8.68 Arsenic 1992 A-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone River Low MT43B001_011 "YELLOWSTONE RIVER, Wyoming border to Yellowstone National Park Boundary" RIVER 8.68 Copper 1992 A-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone River Low MT43B001_011 "YELLOWSTONE RIVER, Wyoming border to Yellowstone National Park Boundary" RIVER 8.68 Nitrate/Nitrite (Nitrite + Nitrate as N) 1988 A-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone River Medium MT43B001_011 "YELLOWSTONE RIVER, Wyoming border to Yellowstone National Park Boundary" RIVER 8.68 Sedimentation/Siltation 1988 A-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Yellowstone River Low MT43B002_021 "BEAR CREEK, 1/2 mile below Jardine Mine to mouth (Yellowstone River)" RIVER 3.03 Temperature 2002 B-1 5 10070001 Yellowstone Headwaters Upper Yellowstone Paradise Low MT43B004_012 "OTTER CREEK, headwaters to 2 mi downstream of Highway 191 bridge" RIVER 24.5 Sedimentation/Siltation 1996 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone - Sweet Grass Low MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" RIVER 26.75 Arsenic 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone - Sweet Grass Low MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" RIVER 26.75 Cadmium 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone - Sweet Grass Low MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" RIVER 26.75 Copper 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone - Sweet Grass Low MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" RIVER 26.75 Iron 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone - Sweet Grass Low MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" RIVER 26.75 Lead 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone - Sweet Grass Low MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" RIVER 26.75 Manganese 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone - Sweet Grass Low MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" RIVER 26.75 Nickel 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone - Sweet Grass Low MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" RIVER 26.75 Sedimentation/Siltation 1992 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone - Sweet Grass Low MT43B004_022 "BIG TIMBER CREEK, headwaters downstream to Swamp Creek" RIVER 26.75 Selenium 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone - Sweet Grass Low MT43B004_042 "UPPER DEER CREEK, headwaters to Cartwright Gulch" RIVER 16.63 Sediment 1996 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Yellowstone - Sweet Grass Low MT43B004_051 "BILLMAN CREEK, 1.3 miles upstream to mouth (Yellowstone River)" RIVER 1.37 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Paradise Low MT43B004_051 "BILLMAN CREEK, 1.3 miles upstream to mouth (Yellowstone River)" RIVER 1.37 Sedimentation/Siltation 1992 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Paradise Low MT43B004_052 "BILLMAN CREEK, headwaters to 1.3 miles above mouth (Yellowstone River)" RIVER 13.44 Combined Biota/Habitat Bioassessments 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Paradise Low MT43B004_052 "BILLMAN CREEK, headwaters to 1.3 miles above mouth (Yellowstone River)" RIVER 13.44 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Paradise Low MT43B004_052 "BILLMAN CREEK, headwaters to 1.3 miles above mouth (Yellowstone River)" RIVER 13.44 Sedimentation/Siltation 1992 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Paradise Low MT43B004_061 "TOM MINER CREEK, Tepee Creek to mouth (Yellowstone River)" RIVER 0.73 Temperature 2002 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Paradise Low MT43B004_102 "SIX MILE CREEK, Absaroka-Beartooth Wilderness boundary to National Forest boundary" RIVER 2.54 Sedimentation/Siltation 2000 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Paradise Low MT43B004_131 "BOULDER RIVER, Clayton Ditch to mouth (Yellowstone River) " RIVER 5.51 Silver 2004 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Boulder - Big Timber Low MT43B004_132 "BOULDER RIVER, Natural Bridge and Falls (T3S R12E S26) to Clayton Ditch (T1N R14E S34)" RIVER 27.84 "Chromium, Total" 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Boulder - Big Timber Low MT43B004_132 "BOULDER RIVER, Natural Bridge and Falls (T3S R12E S26) to Clayton Ditch (T1N R14E S34)" RIVER 27.84 Nickel 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Boulder - Big Timber Low MT43B004_132 "BOULDER RIVER, Natural Bridge and Falls (T3S R12E S26) to Clayton Ditch (T1N R14E S34)" RIVER 27.84 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Boulder - Big Timber Low MT43B004_132 "BOULDER RIVER, Natural Bridge and Falls (T3S R12E S26) to Clayton Ditch (T1N R14E S34)" RIVER 27.84 "Nitrogen, Total" 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Boulder - Big Timber Low MT43B004_133 "BOULDER RIVER, confluence of the East Fork Boulder River to Natural bridge and Falls (T35 R12E S26)" RIVER 24.1 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Boulder - Big Timber Low MT43B004_133 "BOULDER RIVER, confluence of the East Fork Boulder River to Natural bridge and Falls (T35 R12E S26)" RIVER 24.1 "Nitrogen, Total" 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Boulder - Big Timber Low MT43B004_133 "BOULDER RIVER, confluence of the East Fork Boulder River to Natural bridge and Falls (T35 R12E S26)" RIVER 24.1 "Phosphorus, Total" 2006 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Boulder - Big Timber Low MT43B004_141 "EAST BOULDER RIVER, Elk Creek to mouth (Boulder River)" RIVER 3.14 Sedimentation/Siltation 2000 B-1 5 10070002 Upper Yellowstone Upper Yellowstone Boulder - Big Timber Low MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" RIVER 45.59 Cadmium 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" RIVER 45.59 "Chromium, Total" 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" RIVER 45.59 Copper 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" RIVER 45.59 Cyanide 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" RIVER 45.59 Mercury 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" RIVER 45.59 Nickel 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C001_020 "STILLWATER RIVER, Absaroka Beartooth Wilderness Boundary to the mouth (Yellowstone River)" RIVER 45.59 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_010 "LODGEPOLE CREEK, headwaters to mouth (Castle Creek)" RIVER 5.91 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_030 "CASTLE CREEK, headwaters to the mouth (Limestone Creek), T4S R15E S29" RIVER 8.29 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_041 "GROVE CREEK, confluence of South Fork Grove Creek, T4S R18E S13 to the mouth (Stillwater River), T3S R18E S34" RIVER 5.23 "Phosphorus, Total" 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_041 "GROVE CREEK, confluence of South Fork Grove Creek, T4S R18E S13 to the mouth (Stillwater River), T3S R18E S34" RIVER 5.23 Sedimentation/Siltation 1992 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_050 "FISHTAIL CREEK, headwaters to mouth (West Rosebud Creek)" RIVER 14.8 Iron 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_050 "FISHTAIL CREEK, headwaters to mouth (West Rosebud Creek)" RIVER 14.8 Lead 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_070 "JOE HILL CREEK, headwaters to mouth (Stillwater River)" RIVER 13.16 Sedimentation/Siltation 1992 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_081 "BUTCHER CREEK, highway 78 to mouth (Rosebud Creek)" RIVER 22.02 Sediment 1996 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_082 "BUTCHER CREEK, headwaters to highway 78" RIVER 4.98 "Phosphorus, Total" 1996 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_082 "BUTCHER CREEK, headwaters to highway 78" RIVER 4.98 Sedimentation/Siltation 1996 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_090 "WEST ROSEBUD CREEK, Absaroka-Beartooth Wilderness boundary to mouth (Rosebud Creek)" RIVER 31.77 Benthic Macroinvertebrates 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43C002_100 "ROSEBUD CREEK, East and West Branches to mouth (Stillwater River)" RIVER 3.93 Benthic Macroinvertebrates 2006 B-1 5 10070005 Stillwater Upper Yellowstone Stillwater - Columbus Low MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" RIVER 43.32 "Ammonia, Total" 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" RIVER 43.32 Copper 1992 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" RIVER 43.32 Iron 1992 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" RIVER 43.32 Lead 1992 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" RIVER 43.32 Mercury 1992 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" RIVER 43.32 Nitrate/Nitrite (Nitrite + Nitrate as N) 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" RIVER 43.32 "Nitrogen, Total" 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" RIVER 43.32 "Phosphorus, Total" 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" RIVER 43.32 Sediment 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D001_011 "CLARKS FORK YELLOWSTONE RIVER, Bridger Creek to mouth (Yellowstone River)" RIVER 43.32 Temperature 1990 B-2 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_010 "ELBOW CREEK, headwaters to mouth (Clarks Fork)" RIVER 38.57 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 "5,5N" 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_010 "ELBOW CREEK, headwaters to mouth (Clarks Fork)" RIVER 38.57 "Nitrogen, Total" 2006 B-1 "5,5N" 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_010 "ELBOW CREEK, headwaters to mouth (Clarks Fork)" RIVER 38.57 Sedimentation/Siltation 1990 B-1 "5,5N" 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_020 "BEAR CREEK, headwaters to mouth (Clarks Fork)" RIVER 21.14 Iron 1988 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_020 "BEAR CREEK, headwaters to mouth (Clarks Fork)" RIVER 21.14 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_020 "BEAR CREEK, headwaters to mouth (Clarks Fork)" RIVER 21.14 "Phosphorus, Total" 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_020 "BEAR CREEK, headwaters to mouth (Clarks Fork)" RIVER 21.14 Sedimentation/Siltation 1988 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_031 "BLUEWATER CREEK, unnamed tributary at T6N R24E S7 NWNE to mouth (Clarks Fork Yellowstone River)" RIVER 11.41 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_031 "BLUEWATER CREEK, unnamed tributary at T6N R24E S7 NWNE to mouth (Clarks Fork Yellowstone River)" RIVER 11.41 "Phosphorus, Total" 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_031 "BLUEWATER CREEK, unnamed tributary at T6N R24E S7 NWNE to mouth (Clarks Fork Yellowstone River)" RIVER 11.41 Sedimentation/Siltation 1988 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_060 "RED LODGE CREEK, Cooney Reservoir to mouth (Rock Creek)" RIVER 12.07 Organic Enrichment 2000 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_070 "WILLOW CREEK, headwaters to mouth (Cooney Reservoir)" RIVER 36.46 Sedimentation/Siltation 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_080 "WEST RED LODGE CREEK, Absaroka-Beartooth Wilderness boundary to mouth (Red Lodge Creek)" RIVER 14.39 Sedimentation/Siltation 1992 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" RIVER 21.77 Dissolved Oxygen 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" RIVER 21.77 "Nitrogen, Total" 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" RIVER 21.77 "Phosphorus, Total" 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" RIVER 21.77 Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems) 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" RIVER 21.77 Sediment 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" RIVER 21.77 Specific Conductivity 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" RIVER 21.77 Temperature 1996 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" RIVER 21.77 Total Dissolved Solids (TDS) 1990 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_100 "SILVERTIP CREEK, Wyoming border to mouth (Clarks Fork Yellowstone River)" RIVER 21.77 Turbidity 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_140 "COTTONWOOD CREEK, headwaters to the mouth (Clarks Fork of Yellowstone), T3S R24E S24" RIVER 19.57 Dissolved Oxygen 2006 B-1 "5,5N" 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_140 "COTTONWOOD CREEK, headwaters to the mouth (Clarks Fork of Yellowstone), T3S R24E S24" RIVER 19.57 Sediment 1992 B-1 "5,5N" 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_180 "SOUTH FORK BRIDGER CREEK, Headwaters to mouth (Bridger Creek)" RIVER 9.39 Arsenic 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_180 "SOUTH FORK BRIDGER CREEK, Headwaters to mouth (Bridger Creek)" RIVER 9.39 Iron 2006 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43D002_180 "SOUTH FORK BRIDGER CREEK, Headwaters to mouth (Bridger Creek)" RIVER 9.39 Sedimentation/Siltation 1994 B-1 5 10070006 Clarks Fork Yellowstone Upper Yellowstone Clarks Fork Yellowstone Low MT43E001_010 "PRYOR CREEK, Interstate 90 bridge to mouth (Yellowstone River)" RIVER 14.98 Benthic Macroinvertebrates 2006 C-3 5 10070008 Pryor Upper Yellowstone Yellowstone - Lower Bighorn Low MT43E001_011 "PRYOR CREEK, Crow Reservation Boundary to Interstate 90 bridge" RIVER 2.88 Sedimentation/Siltation 1990 B-1 5 10070008 Pryor Upper Yellowstone Yellowstone - Lower Bighorn Low MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" RIVER 10.62 Arsenic 2008 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone River Low MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" RIVER 10.62 Benthic Macroinvertebrates 2008 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone River Low MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" RIVER 10.62 Dissolved Oxygen 2008 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone River Medium MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" RIVER 10.62 Eutrophication 2008 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone River Medium MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" RIVER 10.62 Oil and Grease 2012 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone River Low MT43F001_010 "YELLOWSTONE RIVER, City of Billings PWS to Huntley Diversion Dam" RIVER 10.62 Sediment 2008 B-3 "5,5N" 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone River Low MT43F001_011 "YELLOWSTONE RIVER, City of Laurel PWS to City of Billings PWS" RIVER 19.4 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 B-2 5 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone River Medium MT43F001_011 "YELLOWSTONE RIVER, City of Laurel PWS to City of Billings PWS" RIVER 19.4 Oil and Grease 2012 B-2 5 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone River Low MT43F002_010 "DUCK CREEK, headwaters to mouth (Yellowstone River)" RIVER 13.68 Sedimentation/Siltation 1996 B-2 5 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone - Sweet Grass Low MT43F002_022 "CANYON CREEK, headwaters to highway 532" RIVER 29.7 Dissolved Oxygen 2006 B-2 "5,5N" 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone - Sweet Grass Low MT43F002_022 "CANYON CREEK, headwaters to highway 532" RIVER 29.7 Sedimentation/Siltation 2006 B-2 "5,5N" 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone - Sweet Grass Low MT43F002_040 "VALLEY CREEK, headwaters to mouth (Yellowstone River)" RIVER 14.75 Benthic Macroinvertebrates 2006 B-2 "5,5N" 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone - Sweet Grass Low MT43F002_040 "VALLEY CREEK, headwaters to mouth (Yellowstone River)" RIVER 14.75 Dissolved Oxygen 2006 B-2 "5,5N" 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone - Sweet Grass Low MT43F002_040 "VALLEY CREEK, headwaters to mouth (Yellowstone River)" RIVER 14.75 Sedimentation/Siltation 1992 B-2 "5,5N" 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Yellowstone - Sweet Grass Low MT43F003_010 BIG LAKE FRESHWATER LAKE 2583 Salinity 2000 B-2 5 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Lake Basin - Spidel Low MT43F003_030 HALFBREED LAKE FRESHWATER LAKE 211 Salinity 2002 B-2 5 10070004 Upper Yellowstone-Lake Basin Upper Yellowstone Lake Basin - Spidel Low MT43Q001_011 "YELLOWSTONE RIVER, Huntley Diversion Dam to mouth of Big Horn River" RIVER 58.31 "Ammonia, Un-ionized" 1996 B-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone River Low MT43Q001_011 "YELLOWSTONE RIVER, Huntley Diversion Dam to mouth of Big Horn River" RIVER 58.31 Oil and Grease 2012 B-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone River Low MT43Q001_011 "YELLOWSTONE RIVER, Huntley Diversion Dam to mouth of Big Horn River" RIVER 58.31 Sedimentation/Siltation 1988 B-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone River Low MT43Q001_011 "YELLOWSTONE RIVER, Huntley Diversion Dam to mouth of Big Horn River" RIVER 58.31 Total Dissolved Solids (TDS) 1988 B-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone River Low MT43Q002_010 "FLY CREEK, Crow Indian Reservation boundary to mouth (Yellowstone River)" RIVER 55.68 Dissolved Oxygen 2006 C-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone - Lower Bighorn Low MT43Q002_010 "FLY CREEK, Crow Indian Reservation boundary to mouth (Yellowstone River)" RIVER 55.68 Nitrate/Nitrite (Nitrite + Nitrate as N) 2006 C-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone - Lower Bighorn Low MT43Q002_010 "FLY CREEK, Crow Indian Reservation boundary to mouth (Yellowstone River)" RIVER 55.68 "Nitrogen, Total" 2006 C-3 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Yellowstone - Lower Bighorn Low MT43Q003_010 SPIDEL WATERFOWL PRODUCTION AREA FRESHWATER LAKE 659.8 Salinity 2000 B-1 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Lake Basin - Spidel Low MT43Q003_010 SPIDEL WATERFOWL PRODUCTION AREA FRESHWATER LAKE 659.8 Selenium 2000 B-1 5 10070007 Upper Yellowstone-Pompeys Pillar Upper Yellowstone Lake Basin - Spidel Low MT43R001_010 "BIGHORN RIVER, Crow Indian Res. Boundary to mouth (Yellowstone River)" RIVER 40.02 Lead 1996 B-2 5 10080015 Lower Bighorn Big Horn Yellowstone - Lower Bighorn Low MT43R001_010 "BIGHORN RIVER, Crow Indian Res. Boundary to mouth (Yellowstone River)" RIVER 40.02 Mercury 1996 B-2 5 10080015 Lower Bighorn Big Horn Yellowstone - Lower Bighorn Low MT43R002_010 "TULLOCK CREEK, Crow Indian Reservation Boundary to mouth (Bighorn River)" RIVER 58.83 Iron 1990 C-3 5 10080015 Lower Bighorn Big Horn Yellowstone - Lower Bighorn Low MT43R002_010 "TULLOCK CREEK, Crow Indian Reservation Boundary to mouth (Bighorn River)" RIVER 58.83 "Nitrogen, Total" 1990 C-3 5 10080015 Lower Bighorn Big Horn Yellowstone - Lower Bighorn Low MT43R002_010 "TULLOCK CREEK, Crow Indian Reservation Boundary to mouth (Bighorn River)" RIVER 58.83 "Phosphorus, Total" 1990 C-3 5 10080015 Lower Bighorn Big Horn Yellowstone - Lower Bighorn Low MT43R002_010 "TULLOCK CREEK, Crow Indian Reservation Boundary to mouth (Bighorn River)" RIVER 58.83 Sedimentation/Siltation 1990 C-3 5 10080015 Lower Bighorn Big Horn Yellowstone - Lower Bighorn Low MT76A001_010 "KOOTENAI RIVER, confluence with Yaak River to Idaho border" RIVER 6.09 Temperature 1992 B-1 5 17010104 Lower Kootenai Kootenai Kootenai Low MT76D001_010 "KOOTENAI RIVER, Libby Dam to Yaak River" RIVER 44.64 Temperature 1990 B-1 5 17010101 Middle Kootenai Kootenai Kootenai Low MT76D003_010 LAKE KOOCANUSA FRESHWATER LAKE 28874.5 Selenium 2012 B-1 5 17010101 Middle Kootenai Kootenai Kootenai Low MT76L001_010 "FLATHEAD RIVER, Flathead Reservation boundary to mouth (Clark Fork River)" RIVER 4.24 Nitrate/Nitrite (Nitrite + Nitrate as N) 2010 B-1 5 17010212 Lower Flathead Pend Oreille Lower Flathead Low MT76L001_010 "FLATHEAD RIVER, Flathead Reservation boundary to mouth (Clark Fork River)" RIVER 4.24 "Nitrogen, Total" 2010 B-1 5 17010212 Lower Flathead Pend Oreille Lower Flathead Low MT76L001_010 "FLATHEAD RIVER, Flathead Reservation boundary to mouth (Clark Fork River)" RIVER 4.24 "Phosphorus, Total" 2010 B-1 5 17010212 Lower Flathead Pend Oreille Lower Flathead Low MT76L001_010 "FLATHEAD RIVER, Flathead Reservation boundary to mouth (Clark Fork River)" RIVER 4.24 Sedimentation/Siltation 1990 B-1 5 17010212 Lower Flathead Pend Oreille Lower Flathead Low MT76L001_010 "FLATHEAD RIVER, Flathead Reservation boundary to mouth (Clark Fork River)" RIVER 4.24 Temperature 1990 B-1 5 17010212 Lower Flathead Pend Oreille Lower Flathead Low MT76N001_010 "CLARK FORK RIVER, Flathead River to Thompson Falls Reservoir" RIVER 36.3 Dissolved Gas Supersaturation 2014 B-1 5 17010213 Lower Clark Fork Pend Oreille Clark Fork River Low MT76N001_020 "CLARK FORK RIVER, Noxon Dam to Noxon Bridge" RIVER 2.85 Dissolved Gas Supersaturation 2006 B-1 5 17010213 Lower Clark Fork Pend Oreille Clark Fork River Low MT76N001_020 "CLARK FORK RIVER, Noxon Dam to Noxon Bridge" RIVER 2.85 Temperature 2006 B-1 5 17010213 Lower Clark Fork Pend Oreille Clark Fork River Low MT76O002_040 "SPRING CREEK, headwaters to mouth (Ashley Creek)" RIVER 4.8 Arsenic 2006 B-1 5 17010208 Flathead Lake Pend Oreille Flathead - Stillwater Low MT76O003_010 FLATHEAD LAKE FRESHWATER LAKE 57305 Mercury 2000 A-1 5 17010208 Flathead Lake Pend Oreille Flathead Lake Low MT76O003_010 FLATHEAD LAKE FRESHWATER LAKE 57305 Polychlorinated Biphenyls (PCBs) 2000 A-1 5 17010208 Flathead Lake Pend Oreille Flathead Lake Low MT76P003_010 "WHITEFISH RIVER, Whitefish Lake to mouth (Stillwater River)" RIVER 24.8 Oil and Grease 2000 B-2 5 17010210 Stillwater Pend Oreille Flathead - Stillwater Low MT76P003_010 "WHITEFISH RIVER, Whitefish Lake to mouth (Stillwater River)" RIVER 24.8 Polychlorinated Biphenyls (PCBs) 2000 B-2 5 17010210 Stillwater Pend Oreille Flathead - Stillwater Low MT76P004_010 WHITEFISH LAKE FRESHWATER LAKE 3317.4 Mercury 2000 A-1 5 17010210 Stillwater Pend Oreille Flathead - Stillwater Low MT76P004_010 WHITEFISH LAKE FRESHWATER LAKE 3317.4 Polychlorinated Biphenyls (PCBs) 2000 A-1 5 17010210 Stillwater Pend Oreille Flathead - Stillwater Low