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Montana State Report
Other states that contain this watershed:
Wyoming, Clarks Fork Yellowstone Watershed

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Water Quality Data Available for this Watershed

Montana, Clarks Fork Yellowstone Watershed


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Features

Assessment Summary for Reporting Year 2010
Montana, Clarks Fork Yellowstone Watershed

Description of this table
Click here to list Threatened and Impaired Waters Only
NOTE: Click on the underlined "Waterbody Name" to view a Waterbody report.
Waterbody Name Waterbody ID Location Map Waterbody Type Size Units Status State TMDL Development Status
Basin Creek Lake MT43D003_100 Basin Creek Lake, T8s R19e S7 Waterbody Map Freshwater Lake 7.4 Acres Good  
Bear Creek MT43D002_020 Bear Creek, Headwaters To Mouth (Clarks Fork) Waterbody Map River 21.1 Miles Impaired TMDL needed
Big Moose Lake MT43D003_110 Big Moose Lake, T9s R16e S33 Waterbody Map Freshwater Lake 15.0 Acres Good  
Black Canyon Lake MT43D003_120 Black Canyon Lake, T9s R18e S5 Waterbody Map Freshwater Lake 82.3 Acres Good  
Bluewater Creek MT43D002_031 Bluewater Creek, Mouth To 9 Miles Upstream (Clarks Fork Yellowstone River) Waterbody Map River 11.4 Miles Impaired TMDL needed
Bluewater Creek MT43D002_032 Bluewater Creek, Headwaters To Nine Miles Above Mouth Waterbody Map River 12.9 Miles Good  
Clarks Fork Yellowstone River MT43D001_011 Clarks Fork Yellowstone River, Bridger Creek To Mouth (Yellowstone River) Waterbody Map River 46.2 Miles Impaired TMDL needed
Clarks Fork Yellowstone River MT43D001_012 Clarks Fork Yellowstone River, Montana Border To Bridger Creek Waterbody Map River 26.6 Miles Not_Assessed  
Clarks Fork Yellowstone River MT43D001_020 Clarks Fork Yellowstone River, Headwaters To Montana Border Waterbody Map River 5.1 Miles Impaired TMDL completed
Cooney Reservoir MT43D003_010 Cooney Reservoir Waterbody Map Freshwater Lake 815.4 Acres Good  
Cottonwood Creek MT43D002_140 Cottonwood Creek, Headwaters To The Mouth (Clarks Fork Of Yellowstone), T3s R24e S24 Waterbody Map River 19.6 Miles Impaired TMDL needed
Elbow Creek MT43D002_010 Elbow Creek, Headwaters To Mouth (Clarks Fork) Waterbody Map River 38.6 Miles Impaired TMDL needed
Elpestrine Lake MT43D003_130 Elpestrine Lake, T8s R16e S35 Waterbody Map Freshwater Lake 10.0 Acres Good  
Fisher Creek MT43D002_110 Fisher Creek, Headwaters To Mouth (Clarks Fork Yellowstone River) Waterbody Map River 3.3 Miles Impaired TMDL completed
Lady Of The Lake Creek MT43D002_160 Lady Of The Lake Creek, Headwaters To Fisher Creek Waterbody Map River 4.7 Miles Good  
Lower Basin Creek Lake MT43D003_140 Lower Basin Creek Lake Waterbody Map Freshwater Lake 2.5 Acres Good  
Red Lodge Creek MT43D002_050 Red Lodge Creek, Headwaters To Cooney Reservoir Waterbody Map River 17.9 Miles Impaired Non-pollutant impairment
Red Lodge Creek MT43D002_060 Red Lodge Creek, Cooney Reservoir To Mouth (Rock Creek) Waterbody Map River 12.1 Miles Impaired TMDL needed
Rock Creek MT43D002_120 Rock Creek, Red Lodge Creek To Mouth (Clarks Fork) Waterbody Map River 16.0 Miles Impaired Non-pollutant impairment
Rock Creek MT43D002_131 Rock Creek, West Fork Rock Creek To Red Lodge Creek Waterbody Map River 27.5 Miles Impaired Non-pollutant impairment
Rock Creek MT43D002_132 Rock Creek, State Line To West Fork Rock Creek Waterbody Map River 16.8 Miles Good  
Silvertip Creek MT43D002_100 Silvertip Creek, State Line To Mouth (Clarks Fork) Waterbody Map River 21.8 Miles Impaired TMDL needed
South Fork Bridger Creek MT43D002_180 South Fork Bridger Creek, Tributary To Bridger Creek Waterbody Map River 9.4 Miles Impaired TMDL needed
Spring Creek MT43D002_040 Spring Creek, Headwaters To Mouth (Clark Fork) Waterbody Map Ephemeral Stream 13.4 Miles Good  
West Red Lodge Creek MT43D002_080 West Red Lodge Creek, Absaroka-Beartooth Wilderness Boundary To Mouth (Red Lodge Creek) Waterbody Map River 14.4 Miles Impaired TMDL needed
Willow Creek MT43D002_070 Willow Creek, Headwaters To Mouth (Cooney Reservoir) Waterbody Map River 36.5 Miles Impaired TMDL needed
Wyoming Creek MT43D002_090 Wyoming Creek, State Line To Mouth (Rock Creek) Waterbody Map River 4.2 Miles Good  

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Causes of Impairment for Reporting Year 2010

Montana, Clarks Fork Yellowstone

Description of this table
NOTE: Click on the underlined "Cause of Impairment" value to see a listing of those waters with that cause of impairment.
Cause of Impairment Size of Assessed Waters with Listed Causes of Impairment
Rivers and
Streams (Miles)		 Lakes, Reservoirs,
and Ponds (Acres)
Aluminum 3.3  
Low Flow Alterations 126.2  
Physical Substrate Habitat Alterations 58.3  
Cadmium 8.4  
pH 8.4  
Chlorophyll-A 117.3  
Other Flow Regime Alterations 33.8  
Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems) 21.8  
Specific Conductivity 21.8  
Turbidity 21.8  
Zinc 8.4  
Arsenic 9.4  
Lead 54.6  
Phosphorus, Total 100.5  
Copper 54.6  
Nitrate/Nitrite (Nitrite + Nitrate as N) 117.3  
Ammonia, Total 46.2  
Dissolved Oxygen 41.3  
High Flow Regime 21.1  
Manganese 3.3  
Silver 8.4  
Iron 80.1  
Organic Enrichment (Sewage) Biological Indicators 12.1  
Solids (Suspended/Bedload) 137.5  
Temperature, Water 68.0  
Alteration in Stream-Side or Littoral Vegetative Covers 119.0  
Mercury 46.2  
Sedimentation/Siltation 134.7  
Total Dissolved Solids (TDS) 21.8  
Total Kjehldahl Nitrogen (TKN) 106.6  

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Probable Sources Contributing to Impairments for Reporting Year 2010

Montana, Clarks Fork Yellowstone Watershed

Description of this table
Probable Source Size of Assessed Waters with Probable Sources of Impairments
Rivers and
Streams (Miles)		 Lakes, Reservoirs,
and Ponds (Acres)
Acid Mine Drainage 8.4  
Agriculture 31.0  
Animal Feeding Operations (Nps) 50.0  
Aquaculture (Permitted) 11.4  
Channelization 21.8  
Crop Production (Crop Land Or Dry Land) 17.9  
Dam Or Impoundment 21.8  
Drought-Related Impacts 19.6  
Flow Alterations From Water Diversions 43.5  
Grazing In Riparian Or Shoreline Zones 107.2  
Habitat Modification - Other Than Hydromodification 46.2  
Highway/Road/Bridge Runoff (Non-Construction Related) 3.3  
Impacts From Abandoned Mine Lands (Inactive) 29.5  
Impacts From Hydrostructure Flow Regulation/Modification 58.3  
Irrigated Crop Production 197.3  
Loss Of Riparian Habitat 42.9  
Mine Tailings 8.4  
Natural Sources 45.6  
Petroleum/Natural Gas Production Activities (Permitted) 21.8  
Pipeline Breaks 21.8  
Rangeland Grazing 81.5  
Source Unknown 70.0  
Streambank Modifications/Destabilization 58.3  
Transfer Of Water From An Outside Watershed 21.1  
Upstream Source 21.8  

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TMDL Alternatives by Cause of Impairment for Reporting Year 2010


Montana, Clarks Fork Yellowstone Watershed


No TMDL Alternatives reported.

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Cumulative TMDLs by Pollutant

Montana, Clarks Fork Yellowstone Watershed

This chart includes TMDLs since October 1, 1995.

Description of this table
NOTE: Click on the underlined "Number of TMDLs Completed" value to see a listing of those approved TMDLs for the pollutant.
Pollutant Number of TMDLs Completed Number of Causes of
Impairment Addressed
Cadmium color.gif 2 2
Copper color.gif 2 2
Lead color.gif 2 2
Silver color.gif 2 2
Zinc color.gif 2 2
pH color.gif 2 2
Aluminum color.gif 1 1
Fecal color.gif 1 1
Iron color.gif 1 1
Manganese color.gif 1 1
Sediment color.gif 1 1

Total: 17 TMDLs; 0 Causes of Impairment



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