Lake Elsinore
Lake Elsinore in Riverside County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 330 µg/L.
- Public access
- Yes
Why Lake Elsinore 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 Elsinore, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
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 Elsinore is a lake in Riverside 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 2021-06-17. Grade methodology: LakeGrade methodology.
Watch Lake Elsinore water quality
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Swimming Safety
Not ratedBacteria advisory
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Elsinore
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 330 µg/L. Trophic State Index: 88.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 330 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 88 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Lake Elsinore
Compare lakeside cabins, hotels, and vacation rentals near Lake Elsinore in Riverside 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 Elsinore
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Recreation & Access
- Lake Elsinore Recreation AreaPublic
- Lake Elsinore West Marina & RV ParkSemi-private
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Lake Elsinore
EPA Impairment Status
Lake Elsinore is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit CAL8023100019990208151100 · Official waterbody report
Graded lakes near Lake Elsinore
Lake Elsinore has no grade, but these lakes within a short drive do.
Nearby Lakes in Riverside County
Frequently asked questions about Lake Elsinore
Where is Lake Elsinore?
- Lake Elsinore is a lake in Riverside 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 Elsinore?
- Lake Elsinore in Riverside County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 330 µg/L.
Is Lake Elsinore safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Elsinore 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 Elsinore?
- Lake Elsinore has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Lake Elsinore Recreation Area, Lake Elsinore West Marina & RV Park. Public access is listed as yes.
Explore Lake Elsinore across LakeGrade
More California Lake Rankings
Other Lakes in California
Hypereutrophic Lakes in California
Where this data comes from
2 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- California State Water Resources Control Board
CEDEN2 samples · 2021
Analytical methods
- SM 4500-P BE
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