Lyons Reservoir
Tuolumne County, California133 acresView mapDirections
No nutrient or algae sampling on record from SWRCB for this lake.
- Limited data
Lyons Reservoir in Tuolumne County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 133 acres.
Lyons Reservoir is a 133-acre lake in Tuolumne County, California.
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lyons Reservoir is safe to swim in today is a call for the California State Water Resources Control Board and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lyons Reservoir
These are the measurements SWRCB publishes for Lyons 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.
Ask about Lyons Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
133 acres
Shoreline
4.4 mi
No bathymetric survey has been published for Lyons Reservoir, so its depth is not documented here.
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Frequently asked questions about Lyons Reservoir
Where is Lyons Reservoir?
- Lyons Reservoir is a lake in Tuolumne County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Lyons Reservoir?
- Lyons Reservoir in Tuolumne County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 133 acres.
Is Lyons 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 Lyons Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.