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State: Montana
Waterbody ID: MT76G002_062
Location: WILLOW CREEK, T4N, R10W, Sec30 (DABC) to mouth (Silver Bow Creek)
State Waterbody Type: River
EPA Waterbody Type: Rivers and Streams
Water Size: 7.4
Units: miles
Watershed Name: Upper Clark Fork
On This Page
- Water Quality Assessment Status
- Causes of Impairment
- Probable Sources Contributing to Impairments
- TMDLs That Apply to This Waterbody
- Previous Causes of Impairment Now Attaining All Uses
State: Montana
Waterbody ID: MT76G002_062
Location: WILLOW CREEK, T4N, R10W, Sec30 (DABC) to mouth (Silver Bow Creek)
State Waterbody Type: River
EPA Waterbody Type: Rivers and Streams
Water Size: 7.4
Units: miles
Watershed Name: Upper Clark Fork
Data are also available for these years: 2006 2004 2002 2000
2008 Waterbody Report for Willow Creek
Click on the waterbody for an interactive map
Features
- About This Database (Integrated Report)
- Assessing Water Quality (Questions and Answers)
- Integrated Reporting Guidance
- Previous National Water Quality Reports
- EnviroMapper for Water
- AskWATERS
- EPA WATERS Homepage
- Exchange Network
- Assessment Database
- Statewide Statistical Surveys
- How's My Waterway Local Search tool
- Pollution Categories Summary Document
Water Quality Assessment Status for Reporting Year 2008
The overall status of this waterbody is Impaired.
Description of this table
| Designated Use | Designated Use Group | Status |
|---|---|---|
| Agricultural | Agricultural | Good |
| Aquatic Life | Fish, Shellfish, And Wildlife Protection And Propagation | Impaired |
| Cold Water Fishery | Fish, Shellfish, And Wildlife Protection And Propagation | Impaired |
| Drinking Water | Public Water Supply | Impaired |
| Industrial | Industrial | Good |
| Primary Contact Recreation | Recreation | Good |
Causes of Impairment for Reporting Year 2008
Description of this table
| Cause of Impairment | Cause of Impairment Group | Designated Use(s) | State TMDL Development Status |
|---|---|---|---|
| Alteration in Stream-Side or Littoral Vegetative Covers | Habitat Alterations | Cold Water Fishery, Aquatic Life | Non-pollutant impairment |
| Arsenic | Metals (other than Mercury) | Drinking Water, Aquatic Life, Cold Water Fishery | TMDL needed |
| Cadmium | Metals (other than Mercury) | Aquatic Life, Cold Water Fishery, Drinking Water | TMDL needed |
| Copper | Metals (other than Mercury) | Drinking Water, Cold Water Fishery, Aquatic Life | TMDL needed |
| Lead | Metals (other than Mercury) | Aquatic Life, Cold Water Fishery, Drinking Water | TMDL needed |
| Low Flow Alterations | Flow Alteration(s) | Aquatic Life, Cold Water Fishery | Non-pollutant impairment |
Probable Sources Contributing to Impairment for Reporting Year 2008
Description of this table
| Probable Source | Probable Source Group | Cause(s) of Impairment |
|---|---|---|
| Agriculture | Agriculture | Alteration in Stream-Side or Littoral Vegetative Covers; Low Flow Alterations |
| Atmospheric Deposition - Toxics | Atmospheric Deposition | Arsenic; Cadmium; Copper; Lead |
| Grazing In Riparian Or Shoreline Zones | Agriculture | Alteration in Stream-Side or Littoral Vegetative Covers |
| Mill Tailings | Industrial | Arsenic; Cadmium; Copper; Lead |
TMDLs That Apply to this waterbody
Description of this table
Previous Causes of Impairments Now Attaining All Uses
No causes of impairment are recorded as attaining all uses for this waterbody.