Bear River Reservoir
Bear River Reservoir in Amador County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 165 acres.
- Area
- 165 acres
Next lake in Amador County
Swipe left or right on this bar to open the next or previous lake.
Why Bear River Reservoir 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 Bear River Reservoir, 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.
Bear River Reservoir is a 165-acre lake in Amador County, California.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Bear River Reservoir water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Bear River Reservoir
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 Bear River Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Bear River Reservoir in Amador 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 Bear River Reservoir
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 165 acres |
No bathymetric survey has been published for Bear River Reservoir, so its depth is not documented here.
Fishing Bear River Reservoir
Nearby Lakes in Amador County
Frequently asked questions about Bear River Reservoir
Where is Bear River Reservoir?
- Bear River Reservoir is a lake in Amador 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 Bear River Reservoir?
- Bear River Reservoir in Amador County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 165 acres.
Is Bear River Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Bear River Reservoir is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Bear River Reservoir across LakeQuality
More California Lake Rankings
Other Lakes in California
Where this data comes from
Measurements for Bear River Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.