Foss Reservoir
Custer County, Oklahoma6,381 acresView mapDirections
No nutrient or algae sampling on record from Oklahoma DEQ for this lake.
- 89 ft max depth
Foss Reservoir in Custer County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Maximum depth: 88.6 ft. Surface area: 6381 acres.
Foss Reservoir is a 6,381-acre lake in Custer County, Oklahoma with a maximum depth of 89 feet (23-foot average).
Source: EPA Water Quality Portal sampling records, ODEQ. Methodology: how these readings are compared.
What Foss Reservoir is good for
From access and monitoring records, not editorial picks.
- Deep water88.6 ft surveyed max depth
- Big water6,381 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Foss Reservoir is safe to swim in today is a call for the Oklahoma Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Foss Reservoir
These are the measurements Oklahoma DEQ publishes for Foss 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 Foss Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
88.6 ft
Average depth
23 ft
Surface area
6,381 acres
Shoreline
42.2 mi
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Fishing Foss Reservoir
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Frequently asked questions about Foss Reservoir
Where is Foss Reservoir?
- Foss Reservoir is a lake in Custer County, Oklahoma. Its water-quality measurements are published by Oklahoma DEQ and shown on this page as reported.
What is the water quality of Foss Reservoir?
- Foss Reservoir in Custer County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Maximum depth: 88.6 ft. Surface area: 6381 acres.
Is Foss Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Foss Reservoir?
- Foss Reservoir has a maximum depth of 88.6 feet and an average depth of 23 feet. The lake covers 6381 acres.
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Where this data comes from
Measurements for Foss Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.