Highland Springs Reservoir
Highland Springs Reservoir in Lake County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 72 acres.
- Area
- 72 acres
Why Highland Springs Reservoir 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 Highland Springs Reservoir, 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.
Highland Springs Reservoir is a 72-acre lake in Lake County, California.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2023-10-05. Grade methodology: LakeGrade methodology.
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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 Highland Springs Reservoir
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 Highland Springs Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Highland Springs Reservoir 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 Highland Springs Reservoir
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 72 acres |
No bathymetric survey has been published for Highland Springs Reservoir, so its depth is not documented here.
Fishing Highland Springs Reservoir
Reservoir Info (USACE NID)
Highland Springs Reservoir is a man-made reservoir impounded by the Hland Creek (completed 1962), built primarily for flood risk reduction on the Hland Creek; earth-type dam, 75 ft tall and 625 ft long.
- Surface area
- 72 ac
- Max storage
- 3,500 ac-ft
- Drainage area
- 14.15 sq mi
- Hazard class
- High
- Owner
- Lake County Watershed Protection District
All listed purposes: Flood Risk Reduction;Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID CA00828 · Operator website · Matched by proximity (0.28 km)
Graded lakes near Highland Springs Reservoir
Highland Springs Reservoir has no grade, but these lakes within a short drive do.
Nearby Lakes in Lake County
Frequently asked questions about Highland Springs Reservoir
Where is Highland Springs Reservoir?
- Highland Springs Reservoir 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 Highland Springs Reservoir?
- Highland Springs Reservoir in Lake County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 72 acres.
Is Highland Springs Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Highland Springs 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 Highland Springs Reservoir across LakeGrade
More California Lake Rankings
Other Lakes in California
Where this data comes from
1 measurement from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- USGS California Water Science Center
USGS-CA1 sample · 2023
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.