East Corner of Big Valley Rancheria Marina Lake
East Corner of Big Valley Rancheria Marina Lake in Lake County, California has a water quality grade of D (Nutrient-rich). Water clarity: 2 ft visibility. Chlorophyll-a (algae): 9.8 µg/L.
- Clarity
- 2 ft
- Type
- Eutrophic
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near East Corner of Big Valley Rancheria Marina Lake →
East Corner of Big Valley Rancheria Marina Lake is a productive, nutrient-rich eutrophic lake in Lake County, California. Water quality is graded D based on 1 sampling years through 2026. Public access is available with 1 public boat landing. Compared to the 35 other monitored lakes in Lake County, East Corner of Big Valley Rancheria Marina Lake ranks #13 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-04-30. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyElevated nutrients
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
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Water Quality Grade: D (Nutrient-rich)
Very murky, less than 2 ft of visibility. Chlorophyll-a: 9.8 µg/L. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 9.8 µg/L | Poor |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near East Corner of Big Valley Rancheria Marina Lake
Compare lakeside cabins, hotels, and vacation rentals near East Corner of Big Valley Rancheria Marina 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around East Corner of Big Valley Rancheria Marina Lake are listed below.
Top-rated places to stay near East Corner of Big Valley Rancheria Marina Lake
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Recreation & Access
- Konocti Vista Casino Resort and MarinaSemi-private
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing East Corner of Big Valley Rancheria Marina Lake
County Ranking
Ranked #13 of 36 lakes in Lake County
Nearby Lakes in Lake County
Frequently asked questions about East Corner of Big Valley Rancheria Marina Lake
Where is East Corner of Big Valley Rancheria Marina Lake?
- East Corner of Big Valley Rancheria Marina Lake is a lake in Lake County, California. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for East Corner of Big Valley Rancheria Marina Lake?
- East Corner of Big Valley Rancheria Marina Lake in Lake County, California has a water quality grade of D (Nutrient-rich). Water clarity: 2 ft visibility. Chlorophyll-a (algae): 9.8 µg/L.
Is East Corner of Big Valley Rancheria Marina Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. East Corner of Big Valley Rancheria Marina Lake has a water quality grade of D (Nutrient-rich). Algae concentration (chlorophyll-a) is 9.8 µg/L. Always check local health department advisories before swimming.
Are there boat ramps on East Corner of Big Valley Rancheria Marina Lake?
- East Corner of Big Valley Rancheria Marina Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Konocti Vista Casino Resort and Marina.
Explore East Corner of Big Valley Rancheria Marina Lake across LakeGrade
More California Lake Rankings
Other Grade D Lakes in California
Eutrophic Lakes in California
Where this data comes from
95 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_BVR95 samples · 2020–2026
Analytical methods
- Chlorophyll a
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory