Upper Lake
Modoc County, California14,149 acresView mapDirections
No nutrient or algae sampling on record from SWRCB for this lake.
Upper Lake in Modoc County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 14149 acres.
Upper Lake is a 14,149-acre lake in Modoc County, California.
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
What Upper Lake is good for
From access and monitoring records, not editorial picks.
- Big water14,149 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Upper 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 Upper Lake
These are the measurements SWRCB publishes for Upper 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 Upper Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
14,149 acres
No bathymetric survey has been published for Upper Lake, so its depth is not documented here.
Stays via Stay22
Stays near Upper Lake
Compare lakeside cabins, hotels, and vacation rentals near Upper Lake in Modoc County, California — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Upper Lake
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Fishing Upper Lake
Nearby Lakes in Modoc County
Frequently asked questions about Upper Lake
Where is Upper Lake?
- Upper Lake is a lake in Modoc County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Upper Lake?
- Upper Lake in Modoc County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 14149 acres.
Is Upper 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 Upper Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.