Pioneer Reservoir
Gooding County, Idaho204 acresView mapDirections
No nutrient or algae sampling on record from Idaho DEQ for this lake.
- Impaired · Hydrologic alteration
Pioneer Reservoir in Gooding County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Surface area: 204 acres.
Pioneer Reservoir is a 204-acre lake in Gooding County, Idaho.
Source: EPA Water Quality Portal sampling records, IDEQ. Methodology: how these readings are compared.
Swimming conditions
No readingBacteria advisory
Nutrient and algae readings are not a swimming clearance. Pioneer Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for hydrologic alteration, nutrients (phosphorus, nitrogen), pathogens (E. coli, fecal), temperature, turbidity. Check local advisories before you swim.
Whether Pioneer Reservoir is safe to swim in today is a call for the Idaho Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Pioneer Reservoir
These are the measurements Idaho DEQ publishes for Pioneer Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Pioneer Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
204 acres
Shoreline
4.3 mi
No bathymetric survey has been published for Pioneer Reservoir, so its depth is not documented here.
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Stays near Pioneer Reservoir
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Fishing Pioneer Reservoir
EPA Impairment Status
Pioneer Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit ID17040212SK035_04 · Official waterbody report
Nearby Lakes in Gooding County
Frequently asked questions about Pioneer Reservoir
Where is Pioneer Reservoir?
- Pioneer Reservoir is a lake in Gooding County, Idaho. Its water-quality measurements are published by Idaho DEQ and shown on this page as reported.
What is the water quality of Pioneer Reservoir?
- Pioneer Reservoir in Gooding County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Surface area: 204 acres.
Is Pioneer Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Pioneer Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for hydrologic alteration, nutrients (phosphorus, nitrogen), pathogens (E. coli, fecal), temperature, turbidity. Check local advisories before you swim.
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Where this data comes from
Measurements for Pioneer Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database