Blue Lakes
Lake County, CaliforniaView mapDirections
No nutrient or algae sampling on record from SWRCB for this lake.
- Impaired · Mercury
- Limited data
Blue Lakes in Lake County, California has water-quality measurements published by SWRCB, shown here as reported.
Blue Lakes is a lake in Lake County, California.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2023-10-05. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Blue Lakes is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Whether Blue Lakes 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 Blue Lakes
These are the measurements SWRCB publishes for Blue Lakes, 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 Blue Lakes
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Blue Lakes
Compare lakeside cabins, hotels, and vacation rentals near Blue Lakes in Lake 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 Blue Lakes
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Fishing Blue Lakes
EPA Impairment Status
Blue Lakes is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Fish consumption, Other.
Source: EPA ATTAINS assessment unit CAL5135402020111118114910 · Official waterbody report
Nearby Lakes in Lake County
Frequently asked questions about Blue Lakes
Where is Blue Lakes?
- Blue Lakes is a lake in Lake County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Blue Lakes?
- Blue Lakes in Lake County, California has water-quality measurements published by SWRCB, shown here as reported.
Is Blue Lakes safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Blue Lakes is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Explore Blue Lakes across LakeQuality
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Other Lakes in California
Where this data comes from
1 measurement from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- USGS California Water Science Center
USGS-CA1 sample · 2023
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database