County Park Lake
Lake County, CaliforniaView mapDirections
SWRCB publishes the water-quality measurements for County Park Lake. Here is what has been measured.
- Public access
- Limited data
County Park Lake in Lake County, California has water-quality measurements published by SWRCB, shown here as reported. Chlorophyll-a (algae): 14.4 µg/L.
County Park Lake is a lake in Lake County, California. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-06-24. Methodology: how these readings are compared.
What County Park Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether County Park 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 County Park Lake
These are the measurements SWRCB publishes for County Park 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. Chlorophyll-a 14.4 µg/L. TSI 57.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | 14.4µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 57 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about County Park Lake
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
- Clear Lake Lakeside County ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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Stays near County Park Lake
Compare lakeside cabins, hotels, and vacation rentals near County Park Lake 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.
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Fishing County Park Lake
Nearby Lakes in Lake County
Frequently asked questions about County Park Lake
Where is County Park Lake?
- County Park Lake 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 County Park Lake?
- County Park Lake in Lake County, California has water-quality measurements published by SWRCB, shown here as reported. Chlorophyll-a (algae): 14.4 µg/L.
Is County Park Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on County Park Lake?
- County Park Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Clear Lake Lakeside County Park. Public access is listed as yes.
Can I fish at County Park Lake?
- County Park Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by California's fish and wildlife agency, so check its current regulations before you go.
Explore County Park Lake across LakeQuality
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Where this data comes from
98 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- Big Valley Band of Pomo Indians of the Big Valley Rancheria, California (Tribal)
CA_BVR98 samples · 2020–2026
Analytical methods
- Chlorophyll a
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
Named boat-access points from the USGS National Boat Ramps inventory