Land'S End Slough Lake
Land'S End Slough Lake in Lake County, California has a water quality grade of D (Nutrient-rich). Water clarity: 1.5 ft visibility. Chlorophyll-a (algae): 10.7 µg/L.
- Clarity
- 1.5 ft
- Type
- Eutrophic
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Land'S End Slough Lake →
Land'S End Slough Lake is a productive, nutrient-rich eutrophic lake in Lake County, California. Water quality is graded D based on 1 sampling years through 2026. Compared to the 35 other monitored lakes in Lake County, Land'S End Slough Lake ranks #17 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 onlyLimited data
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
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 1.5 ft of visibility. Chlorophyll-a: 10.7 µg/L. Trophic State Index: 63.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 10.7 µg/L | Poor |
| Trophic State Index (TSI) | 63 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Land'S End Slough Lake
Compare lakeside cabins, hotels, and vacation rentals near Land'S End Slough 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 Land'S End Slough Lake are listed below.
Top-rated places to stay near Land'S End Slough Lake
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Fishing Land'S End Slough Lake
County Ranking
Ranked #17 of 36 lakes in Lake County
Nearby Lakes in Lake County
Frequently asked questions about Land'S End Slough Lake
Where is Land'S End Slough Lake?
- Land'S End Slough 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 Land'S End Slough Lake?
- Land'S End Slough Lake in Lake County, California has a water quality grade of D (Nutrient-rich). Water clarity: 1.5 ft visibility. Chlorophyll-a (algae): 10.7 µg/L.
Is Land'S End Slough 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. Land'S End Slough Lake has a water quality grade of D (Nutrient-rich). Algae concentration (chlorophyll-a) is 10.7 µg/L. Always check local health department advisories before swimming.
Explore Land'S End Slough Lake across LakeGrade
More California Lake Rankings
Other Grade D Lakes in California
Eutrophic Lakes in California
Where this data comes from
56 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_BVR56 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.