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Montana State Report

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Water Quality Data Available for this Watershed

Montana, Flint-Rock Watershed


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Features

Assessment Summary for Reporting Year 2010
Montana, Flint-Rock 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
Antelope Creek MT76E004_080 Antelope Creek, Headwaters To Mouth (Clark Fork River) Waterbody Map River 7.2 Miles Impaired Non-pollutant impairment
Barnes Creek MT76E003_070 Barnes Creek, Headwaters To Mouth (Flint Creek) Waterbody Map River 8.9 Miles Impaired TMDL needed
Basin Gulch MT76E002_080 Basin Gulch, Headwaters To Mouth (Quartz Gulch) Waterbody Map River 1.5 Miles Impaired Non-pollutant impairment
Boulder Creek MT76E003_060 Boulder Creek, Headwaters To Mouth (Flint Creek) Waterbody Map River 14.2 Miles Impaired TMDL needed
Brewster Creek MT76E002_050 Brewster Creek, East Fork To Mouth (Rock Creek) Waterbody Map River 4.6 Miles Impaired TMDL needed
Camp Creek MT76E003_130 Camp Creek, Headwaters To Terminus, T7n R14w S25 Waterbody Map River 1.8 Miles Impaired TMDL needed
Clark Fork River MT76E001_010 Clark Fork River, Blackfoot River To Flint Creek Waterbody Map River 50.9 Miles Impaired TMDL needed
Cornish Gulch MT76E002_150 Cornish Gulch, Forks To Mouth (Rock Creek) Waterbody Map River 2.9 Miles Good  
Cramer Creek MT76E004_020 Cramer Creek, Headwaters To Mouth (Clark Fork River) Waterbody Map River 12.0 Miles Impaired TMDL needed
Deep Creek MT76E004_070 Deep Creek, Headwaters To Mouth (Bear Creek, Which Is A Tributary To Clark Fork River Near Bearmouth) Waterbody Map River 5.1 Miles Impaired TMDL needed
Douglas Creek MT76E003_020 Douglas Creek, Confluence Of Middle And South Forks To Mouth (Flint Creek), T9n R13w S10 Waterbody Map River 7.1 Miles Impaired TMDL needed
Douglas Creek MT76E003_100 Douglas Creek, Headwaters To Where Stream Ends, T7n R14w S25 Waterbody Map River 3.8 Miles Impaired TMDL needed
East Fork Rock Creek MT76E002_020 East Fork Rock Creek, East Fork Reservoir To Mouth (Middle Fork Rock Creek) Waterbody Map River 9.7 Miles Impaired TMDL needed
Eureka Gulch MT76E002_090 Eureka Gulch, Confluence Of Quartz Gulch And Basin Gulch To Mouth (Rock Creek) Waterbody Map River 1.9 Miles Impaired TMDL needed
Flat Gulch MT76E002_120 Flat Gulch, Headwaters To Mouth (Rock Creek) Waterbody Map River 3.0 Miles Impaired TMDL needed
Flint Creek MT76E003_011 Flint Creek, Georgetown Lake To Confluence With Boulder Creek Waterbody Map River 28.1 Miles Impaired TMDL needed
Flint Creek MT76E003_012 Flint Creek, Boulder Creek To Mouth (Clark Fork River) Waterbody Map River 16.9 Miles Impaired TMDL needed
Fred Burr Creek MT76E003_040 Fred Burr Creek, Fred Burr Lake To Mouth (Flint Creek) Waterbody Map River 11.2 Miles Impaired TMDL needed
Georgetown Lake MT76E005_010 Georgetown Lake Waterbody Map Freshwater Lake 3,655.1 Acres Good  
Harvey Creek MT76E004_041 Harvey Creek, Headwaters To Grouse Gulch Waterbody Map River 12.0 Miles Impaired Non-pollutant impairment
Harvey Creek MT76E004_042 Harvey Creek, Grouse Gulch To Mouth (Clark Fork River) Waterbody Map River 4.0 Miles Impaired Non-pollutant impairment
Miners Gulch MT76E002_160 Miners Gulch, Headwaters To Mouth (Upper Willow Creek), T8n R15w S23 Waterbody Map River 5.4 Miles Impaired TMDL needed
Mulkey Creek MT76E004_050 Mulkey Creek, Headwaters To Mouth (Clark Fork River) Waterbody Map River 6.0 Miles Impaired TMDL needed
North Fork Douglas Creek MT76E003_030 North Fork Douglas Creek, Headwaters To Mouth (Middle Fork Douglas Creek) Waterbody Map River 3.1 Miles Impaired TMDL needed
Princeton Gulch MT76E003_090 Princeton Gulch, Headwaters To Mouth (Boulder Creek) Waterbody Map River 3.9 Miles Impaired TMDL needed
Quartz Gulch MT76E002_070 Quartz Gulch, Headwaters To Mouth (Basin Gulch) Waterbody Map River 3.4 Miles Impaired TMDL needed
Rattler Gulch MT76E004_060 Rattler Gulch, Headwaters To Mouth (Clark Fork River), T11n R13w S22 Waterbody Map River 8.1 Miles Impaired TMDL needed
Rock Creek MT76E002_010 Rock Creek, Headwaters To Mouth (Clark Fork), T11n R17w S12 Waterbody Map River 52.6 Miles Good  
Sawpit Gulch MT76E002_130 Sawpit Gulch, Headwaters To Mouth (Upper Willow Creek) Waterbody Map River 2.1 Miles Not_Assessed  
Scotchman Gulch MT76E002_100 Scotchman Gulch, Headwaters To Mouth (Upper Willow Creek) Waterbody Map River 6.9 Miles Impaired TMDL needed
Sluice Gulch MT76E002_110 Sluice Gulch, Headwaters To Mouth (Rock Creek) Waterbody Map River 6.3 Miles Impaired TMDL needed
Smart Creek MT76E003_110 Smart Creek, Headwaters To Mouth (Flint Creek), T9n R13w S21 Waterbody Map River 11.6 Miles Impaired TMDL needed
South Fork Antelope Creek MT76E002_060 South Fork Antelope Creek, Headwaters To Mouth (Antelope Creek), T6n R15w S22 Waterbody Map River 2.9 Miles Impaired TMDL needed
South Fork Lower Willow Creek MT76E003_050 South Fork Lower Willow Creek, Headwaters To Mouth (Lower Willow Creek) Waterbody Map River 13.3 Miles Impaired TMDL needed
Stewart Creek MT76E003_080 Stewart Creek, Headwaters To Mouth (South Boulder Creek), T7n R13w S15 Waterbody Map River 1.0 Miles Not_Assessed  
Tenmile Creek MT76E004_030 Tenmile Creek, Headwaters To Mouth (Bear Creek-Clark Fork River) Waterbody Map River 4.9 Miles Impaired TMDL needed
Upper Willow Creek MT76E002_040 Upper Willow Creek, Headwaters To Mouth (Rock Creek) Waterbody Map River 21.7 Miles Impaired Non-pollutant impairment
Wallace Creek MT76E004_010 Wallace Creek, Headwaters To Mouth (Clark Fork River) Waterbody Map River 4.3 Miles Impaired TMDL needed
West Fork Rock Creek MT76E002_030 West Fork Rock Creek, Headwaters To Mouth (Rock Creek) Waterbody Map River 25.2 Miles Impaired TMDL needed
Williams Gulch MT76E002_140 Williams Gulch, Headwaters To Mouth (Rock Creek) Waterbody Map River 5.3 Miles Not_Assessed  

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Causes of Impairment for Reporting Year 2010

Montana, Flint-Rock

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)
Antimony 28.1  
Low Flow Alterations 81.3  
Physical Substrate Habitat Alterations 85.8  
Cadmium 102.8  
Sulfates 3.1  
Barium 12.0  
Chlorophyll-A 82.7  
Turbidity 16.9  
Zinc 78.2  
Arsenic 150.3  
Cause Unknown 15.7  
Lead 152.3  
Phosphorus, Total 118.7  
Copper 134.3  
Nitrate/Nitrite (Nitrite + Nitrate as N) 23.3  
Nitrates 3.9  
Nitrogen, Nitrate 16.8  
Cobalt 12.0  
Fish Passage Barrier 6.4  
Iron 80.5  
Nitrogen, Total 67.9  
Solids (Suspended/Bedload) 1.9  
Temperature, Water 12.7  
Alteration in Stream-Side or Littoral Vegetative Covers 191.4  
Mercury 113.1  
Sedimentation/Siltation 132.6  
Total Kjehldahl Nitrogen (TKN) 17.0  

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Probable Sources Contributing to Impairments for Reporting Year 2010

Montana, Flint-Rock 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)
Agriculture 111.2  
Channelization 59.8  
Forest Roads (Road Construction And Use) 30.6  
Freshettes Or Major Flooding 11.6  
Grazing In Riparian Or Shoreline Zones 137.3  
Habitat Modification - Other Than Hydromodification 1.8  
Highway/Road/Bridge Runoff (Non-Construction Related) 12.0  
Impacts From Abandoned Mine Lands (Inactive) 104.5  
Impacts From Hydrostructure Flow Regulation/Modification 9.7  
Irrigated Crop Production 44.9  
Loss Of Riparian Habitat 7.2  
Low Water Crossing 6.0  
Managed Pasture Grazing 8.9  
Mill Tailings 75.5  
Mine Tailings 50.9  
Municipal Point Source Discharges 50.9  
Natural Sources 13.4  
Open Pit Mining 1.9  
Placer Mining 22.7  
Rangeland Grazing 9.9  
Silviculture Activities 27.1  
Silviculture Harvesting 45.9  
Source Unknown 90.4  
Streambank Modifications/Destabilization 43.8  
Subsurface (Hardrock) Mining 5.1  
Watershed Runoff Following Forest Fire 11.6  

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TMDL Alternatives by Cause of Impairment for Reporting Year 2010


Montana, Flint-Rock Watershed


No TMDL Alternatives reported.

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Cumulative TMDLs by Pollutant

Montana, Flint-Rock 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
Lead color.gif 9 9
Arsenic color.gif 8 8
Copper color.gif 7 7
Sediment color.gif 6 6
Mercury color.gif 5 5
Cadmium color.gif 4 4
Iron color.gif 4 4
Zinc color.gif 4 4
Aluminum color.gif 1 1
Antimony color.gif 1 1

Total: 49 TMDLs; 0 Causes of Impairment



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