San Joaquin Reservoir
Orange County, California53 acresView mapDirections
No nutrient or algae sampling on record from SWRCB for this lake.
San Joaquin Reservoir in Orange County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 53 acres.
San Joaquin Reservoir is a 53-acre lake in Orange County, California.
Source: EPA Water Quality Portal sampling records, your state environmental agency. 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 San Joaquin 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 San Joaquin Reservoir
These are the measurements SWRCB publishes for San Joaquin 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
53 acres
No bathymetric survey has been published for San Joaquin Reservoir, so its depth is not documented here.
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Stays near San Joaquin Reservoir
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Frequently asked questions about San Joaquin Reservoir
Where is San Joaquin Reservoir?
- San Joaquin Reservoir is a lake in Orange County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of San Joaquin Reservoir?
- San Joaquin Reservoir in Orange County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 53 acres.
Is San Joaquin 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 San Joaquin Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.