Yosemite Lake
Yosemite Lake in Merced County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 414 acres.
- Area
- 414 acres
- Public access
- Yes
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Why Yosemite Lake 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 Yosemite Lake, 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.
Yosemite Lake is a 414-acre lake in Merced 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 recent years. Grade methodology: LakeQuality methodology.
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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 Yosemite Lake
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 Yosemite Lake
Compare lakeside cabins, hotels, and vacation rentals near Yosemite Lake in Merced 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 Yosemite Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 414 acres |
| Public Access | Yes |
No bathymetric survey has been published for Yosemite Lake, so its depth is not documented here.
Recreation & Access
- Lake YosemitePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Yosemite Lake
Nearby Lakes in Merced County
Frequently asked questions about Yosemite Lake
Where is Yosemite Lake?
- Yosemite Lake is a lake in Merced 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 Yosemite Lake?
- Yosemite Lake in Merced County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 414 acres.
Is Yosemite Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Yosemite Lake 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 Yosemite Lake?
- Yosemite Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Yosemite. Public access is listed as yes.
Explore Yosemite Lake across LakeQuality
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Where this data comes from
Measurements for Yosemite Lake 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