Upper Crystal Springs Reservoir
San Mateo County, California595 acresView mapDirections
No nutrient or algae sampling on record from SWRCB for this lake.
- Limited data
Upper Crystal Springs Reservoir in San Mateo County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 595 acres.
Upper Crystal Springs Reservoir is a 595-acre lake in San Mateo 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 Upper Crystal Springs 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 Upper Crystal Springs Reservoir
These are the measurements SWRCB publishes for Upper Crystal Springs 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.
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Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
595 acres
Shoreline
8.6 mi
No bathymetric survey has been published for Upper Crystal Springs Reservoir, so its depth is not documented here.
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Frequently asked questions about Upper Crystal Springs Reservoir
Where is Upper Crystal Springs Reservoir?
- Upper Crystal Springs Reservoir is a lake in San Mateo County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Upper Crystal Springs Reservoir?
- Upper Crystal Springs Reservoir in San Mateo County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 595 acres.
Is Upper Crystal Springs 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 Upper Crystal Springs Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.