Hays Reservoir
Fremont County, Wyoming40 acresView mapDirections
No nutrient or algae sampling on record from Wyoming DEQ for this lake.
Hays Reservoir in Fremont County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Surface area: 40 acres.
Hays Reservoir is a 40-acre lake in Fremont County, Wyoming.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ. 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 Hays Reservoir is safe to swim in today is a call for the Wyoming Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Hays Reservoir
These are the measurements Wyoming DEQ publishes for Hays 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
40 acres
Shoreline
1.3 mi
No bathymetric survey has been published for Hays Reservoir, so its depth is not documented here.
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Frequently asked questions about Hays Reservoir
Where is Hays Reservoir?
- Hays Reservoir is a lake in Fremont County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Hays Reservoir?
- Hays Reservoir in Fremont County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Surface area: 40 acres.
Is Hays 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 Hays Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.