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State: Idaho
Waterbody ID: ID17040208SK001_05
Location: HUC: 17040208
State Waterbody Type: River
EPA Waterbody Type: Rivers and Streams
Water Size: 28.79
Units: miles
Watershed Name: Portneuf
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: Idaho
Waterbody ID: ID17040208SK001_05
Location: HUC: 17040208
State Waterbody Type: River
EPA Waterbody Type: Rivers and Streams
Water Size: 28.79
Units: miles
Watershed Name: Portneuf
Data are also available for these years: 2008 2006 2004 2002
2010 Waterbody Report for Portneuf River - Marsh Creek to American Falls Reservoir
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 2010
The overall status of this waterbody is Impaired.
Description of this table
| Designated Use | Designated Use Group | Status |
|---|---|---|
| Aesthetic | Aesthetic Value | Not Assessed |
| Agricultural Water Supply | Agricultural | Not Assessed |
| Cold Water Aquatic Life | Fish, Shellfish, And Wildlife Protection And Propagation | Impaired |
| Industrial Water Supply | Industrial | Not Assessed |
| Primary Contact Recreation | Recreation | Not Assessed |
| Salmonid Spawning | Fish, Shellfish, And Wildlife Protection And Propagation | Not Assessed |
| Secondary Contact Recreation | Recreation | Impaired |
| Wildlife Habitat | Fish, Shellfish, And Wildlife Protection And Propagation | Not Assessed |
Causes of Impairment for Reporting Year 2010
Description of this table
| Cause of Impairment | Cause of Impairment Group | Designated Use(s) | State TMDL Development Status |
|---|---|---|---|
| Dissolved Oxygen | Organic Enrichment/Oxygen Depletion | Cold Water Aquatic Life | TMDL needed |
| Fecal Coliform | Pathogens | Secondary Contact Recreation | TMDL completed |
| Nitrogen, Total | Nutrients | Cold Water Aquatic Life | TMDL completed |
| Nutrient/Eutrophication Biological Indicators | Nutrients | Cold Water Aquatic Life | TMDL completed |
| Oil and Grease | Oil and Grease | Cold Water Aquatic Life | TMDL completed |
| Phosphorus, Total | Nutrients | Cold Water Aquatic Life | TMDL completed |
| Physical Substrate Habitat Alterations | Habitat Alterations | Cold Water Aquatic Life | Non-pollutant impairment |
| Sedimentation/Siltation | Sediment | Cold Water Aquatic Life | TMDL completed |
| Temperature | Temperature | TMDL needed | |
| Temperature, Water | Temperature | Cold Water Aquatic Life | TMDL needed |
Probable Sources Contributing to Impairment for Reporting Year 2010
Description of this table
| Probable Source | Probable Source Group | Cause(s) of Impairment |
|---|---|---|
| Channelization | Hydromodification | Oil and Grease; Sedimentation/Siltation |
| Highway/Road/Bridge Runoff (Non-Construction Related) | Urban-Related Runoff/Stormwater | Oil and Grease; Sedimentation/Siltation |
TMDLs That Apply to this waterbody
Description of this table
| TMDL Document Name | TMDL Date | TMDL Pollutant Description | TMDL Pollutant Source Type | Cause(s) of Impairment Addressed |
|---|---|---|---|---|
| Portneuf River Tmdl | Jul-29-2010 | Escherichia Coli (E. Coli) | Nonpoint Source | Nutrients; Phosphorus, Total; Oil and Grease; Nitrogen, Total; Fecal Coliform; Siltation; Bacteria; Nutrient/Eutrophication Biological Indicators |
| Portneuf River Tmdl | Jul-29-2010 | Nitrogen, Total | Nonpoint Source | Nitrogen, Total; Nutrients; Oil and Grease; Siltation; Phosphorus, Total; Nutrient/Eutrophication Biological Indicators; Fecal Coliform; Bacteria |
| Portneuf River Tmdl | Jul-29-2010 | Oil and Grease | Nonpoint Source | Fecal Coliform; Nutrient/Eutrophication Biological Indicators; Nitrogen, Total; Siltation; Bacteria; Nutrients; Phosphorus, Total; Oil and Grease |
| Portneuf River Tmdl | Jul-29-2010 | Phosphorus, Total | Point/Nonpoint Source | Siltation; Nitrogen, Total; Nutrient/Eutrophication Biological Indicators; Oil and Grease; Bacteria; Phosphorus, Total; Nutrients; Fecal Coliform |
| Portneuf River Tmdl | Jul-29-2010 | Total Suspended Solids (TSS) | Point/Nonpoint Source | Fecal Coliform; Siltation; Bacteria; Phosphorus, Total; Nutrient/Eutrophication Biological Indicators; Oil and Grease; Nitrogen, Total; Nutrients |
Previous Causes of Impairments Now Attaining All Uses
No causes of impairment are recorded as attaining all uses for this waterbody.