Thousand Island Lake
Madera County, California332 acresView mapDirections
No nutrient or algae sampling on record from SWRCB for this lake.
Thousand Island Lake in Madera County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 332 acres.
Thousand Island Lake is a 332-acre lake in Madera 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 Thousand Island Lake 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 Thousand Island Lake
These are the measurements SWRCB publishes for Thousand Island Lake, 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 Thousand Island Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
332 acres
Shoreline
6.5 mi
No bathymetric survey has been published for Thousand Island Lake, so its depth is not documented here.
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Stays near Thousand Island Lake
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Frequently asked questions about Thousand Island Lake
Where is Thousand Island Lake?
- Thousand Island Lake is a lake in Madera County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Thousand Island Lake?
- Thousand Island Lake in Madera County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 332 acres.
Is Thousand Island Lake 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 Thousand Island Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.