Ashton Reservoir
Fremont County, Idaho287 acresView mapDirections
No nutrient or algae sampling on record from Idaho DEQ for this lake.
Ashton Reservoir in Fremont County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Surface area: 287 acres.
Ashton Reservoir is a 287-acre lake in Fremont County, Idaho.
Source: EPA Water Quality Portal sampling records, IDEQ. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Ashton 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 Ashton Reservoir
These are the measurements Idaho DEQ publishes for Ashton 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.
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Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
287 acres
Shoreline
10.2 mi
No bathymetric survey has been published for Ashton Reservoir, so its depth is not documented here.
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Frequently asked questions about Ashton Reservoir
Where is Ashton Reservoir?
- Ashton Reservoir is a lake in Fremont County, Idaho. Its water-quality measurements are published by Idaho DEQ and shown on this page as reported.
What is the water quality of Ashton Reservoir?
- Ashton Reservoir in Fremont County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Surface area: 287 acres.
Is Ashton Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Ashton Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.