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- Assessment Summary
- Causes of Impairment
- Probable Sources Contributing to Impairment
- TMDL Alternatives by Cause of Impairment
- Cumulative TMDLs by Pollutant
Montana State Report
Other states that contain this watershed:
Wyoming, Upper Tongue Watershed
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Montana, Upper Tongue Watershed
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Assessment Summary for Reporting Year 2010
Montana, Upper Tongue Watershed
Description of this table
Click here to list Threatened and Impaired Waters Only
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 |
|---|---|---|---|---|---|---|---|---|
| Deer Creek | MT42B002_020 | Deer Creek, Headwaters To Mouth (Tongue River Reservoir) | Waterbody Map | River | 11.8 | Miles | Not_Assessed | |
| Hanging Woman Creek | MT42B002_031 | Hanging Woman Creek, Stroud Creek To Mouth (Tongue River) | Waterbody Map | River | 18.3 | Miles | Impaired | TMDL needed |
| Hanging Woman Creek | MT42B002_032 | Hanging Woman Creek, Wyoming Border To Stroud Creek | Waterbody Map | River | 31.4 | Miles | Impaired | TMDL needed |
| Squirrel Creek | MT42B002_010 | Squirrel Creek, Crow Indian Reservation Boundary To Thewyoming Border | Waterbody Map | River | 16.9 | Miles | Not_Assessed | |
| Tongue River | MT42B001_010 | Tongue River, Wyoming Border To Tongue River Reservoir | Waterbody Map | River | 5.9 | Miles | Impaired | TMDL needed |
| Tongue River | MT42B001_020 | Tongue River, Tongue River Dam To Prairie Dog Creek | Waterbody Map | River | 22.1 | Miles | Impaired | Non-pollutant impairment |
| Tongue River | MT42B001_021 | Tongue River, Prairie Dog Creek To Hanging Woman Creek | Waterbody Map | River | 12.3 | Miles | Impaired | Non-pollutant impairment |
| Tongue River Reservoir | MT42B003_010 | Tongue River Reservoir | Waterbody Map | Freshwater Lake | 3,500.0 | Acres | Impaired | TMDL needed |
Causes of Impairment for Reporting Year 2010
Montana, Upper Tongue
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) |
||||||||||||||
| Low Flow Alterations | 89.9 | ||||||||||||||
| Salinity | 49.6 | ||||||||||||||
| Chlorophyll-A | 3,500.0 | ||||||||||||||
| Dissolved Oxygen | 3,500.0 | ||||||||||||||
| Iron | 24.2 | ||||||||||||||
| Solids (Suspended/Bedload) | 3,500.0 | ||||||||||||||
| Sedimentation/Siltation | 18.3 | ||||||||||||||
Probable Sources Contributing to Impairments for Reporting Year 2010
Montana, Upper Tongue 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) |
||||||||||||||
| Grazing In Riparian Or Shoreline Zones | 18.3 | ||||||||||||||
| Impacts From Hydrostructure Flow Regulation/Modification | 40.2 | ||||||||||||||
| Irrigated Crop Production | 89.9 | 3,500.0 | |||||||||||||
| Municipal Point Source Discharges | 3,500.0 | ||||||||||||||
| Natural Sources | 55.5 | ||||||||||||||
| Rangeland Grazing | 18.3 | ||||||||||||||
| Streambank Modifications/Destabilization | 58.5 | ||||||||||||||
TMDL Alternatives by Cause of Impairment for Reporting Year 2010
Montana, Upper Tongue Watershed
No TMDL Alternatives reported.
Cumulative TMDLs by Pollutant
No TMDL data have been reported to EPA for this watershed.
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