Lake Pillsbury
Lake Pillsbury in Lake County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 2280 acres.
- Area
- 2,280 acres
Why Lake Pillsbury has no grade
We grade a lake only when its monitoring record clears the evidence bar: 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 Pillsbury, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
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 Pillsbury is a 2,280-acre lake in Lake County, California. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-11-29. Grade methodology: LakeGrade methodology.
Watch Lake Pillsbury water quality
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Pillsbury
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Where to stay near Lake Pillsbury
Compare lakeside cabins, hotels, and vacation rentals near Lake Pillsbury 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.
Top-rated places to stay near Lake Pillsbury
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 2,280 acres |
No bathymetric survey has been published for Lake Pillsbury, so its depth is not documented here.
Recreation & Access
- Lake Pillsbury Resort MarinaSemi-private
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Lake Pillsbury
Reservoir Info (USACE NID)
Lake Pillsbury is a man-made reservoir impounded by the Scott (completed 1921), built primarily for hydroelectric on the Eel River; concrete-type dam, 138 ft tall and 805 ft long.
- Surface area
- 2,280 ac
- Normal storage
- 80,600 ac-ft
- Max storage
- 80,463 ac-ft
- Drainage area
- 289 sq mi
- Hazard class
- High
- Owner
- Pacific Gas and Electric Company
Source: USACE National Inventory of Dams, NID ID CA00398 · Operator website
EPA Impairment Status
Lake Pillsbury is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit CAL1116305119990217103140 · Official waterbody report · Matched by proximity (2.46 km)
Graded lakes near Lake Pillsbury
Lake Pillsbury has no grade, but these lakes within a short drive do.
Nearby Lakes in Lake County
Frequently asked questions about Lake Pillsbury
Where is Lake Pillsbury?
- Lake Pillsbury is a lake in Lake County, California. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Lake Pillsbury?
- Lake Pillsbury in Lake County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 2280 acres.
Is Lake Pillsbury safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Pillsbury 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 Pillsbury?
- Lake Pillsbury has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Pillsbury Resort Marina.
Explore Lake Pillsbury across LakeGrade
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Other Lakes in California
Where this data comes from
12 measurements from 1 monitoring station, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- Potter Valley Tribe (Tribal)
POTTERVALLEYTRIBE12 samples · 2024–2025
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
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory