Lake Mendocino
Lake Mendocino in Mendocino County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 1684 acres.
- Area
- 1,684 acres
- Public access
- Yes
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Why Lake Mendocino has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Lake Mendocino, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by your state environmental agency and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Mendocino is a 1,684-acre lake in Mendocino County, California. Limited fish-species data available. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Lake Mendocino water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Mendocino
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Lake Mendocino
Compare lakeside cabins, hotels, and vacation rentals near Lake Mendocino in Mendocino 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 Lake Mendocino
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 1,684 acres |
| Public Access | Yes |
No bathymetric survey has been published for Lake Mendocino, so its depth is not documented here.
Recreation & Access
- Lake MendocinoPublic
- Lake Mendocino Recreation Park, Inc.Semi-private
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Mendocino
Nearby Lakes in Mendocino County
Frequently asked questions about Lake Mendocino
Where is Lake Mendocino?
- Lake Mendocino is a lake in Mendocino County, California. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Lake Mendocino?
- Lake Mendocino in Mendocino County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 1684 acres.
Is Lake Mendocino safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Mendocino is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Lake Mendocino?
- Lake Mendocino has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Lake Mendocino, Lake Mendocino Recreation Park, Inc.. Public access is listed as yes.
Explore Lake Mendocino across LakeQuality
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Other Lakes in California
Where this data comes from
Measurements for Lake Mendocino come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory