Bouldin Island West Pond
Bouldin Island West Pond in San Joaquin County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Chlorophyll-a (algae): 23.2 µg/L.
Why Bouldin Island West Pond 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 Bouldin Island West Pond, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded algae (chlorophyll-a), but not water clarity and phosphorus.
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.
Bouldin Island West Pond is a lake in San Joaquin County, California. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2024-02-13. 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 Bouldin Island West Pond
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Chlorophyll-a: 23.2 µg/L. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 23.2 µg/L | Not graded |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Bouldin Island West Pond
Compare lakeside cabins, hotels, and vacation rentals near Bouldin Island West Pond in San Joaquin 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 Bouldin Island West Pond
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Recreation & Access
- Lighthouse Resort and MarinaSemi-private
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Bouldin Island West Pond
Graded lakes near Bouldin Island West Pond
Bouldin Island West Pond has no grade, but these lakes within a short drive do.
Nearby Lakes in San Joaquin County
Frequently asked questions about Bouldin Island West Pond
Where is Bouldin Island West Pond?
- Bouldin Island West Pond is a lake in San Joaquin 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 Bouldin Island West Pond?
- Bouldin Island West Pond in San Joaquin County, California is not rated for water quality — its monitoring record does not meet the evidence bar. Chlorophyll-a (algae): 23.2 µg/L.
Is Bouldin Island West Pond safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Bouldin Island West Pond is not rated for water quality — its monitoring record does not meet the evidence bar. Algae concentration (chlorophyll-a) is 23.2 µg/L. Always check local health department advisories before swimming.
Are there boat ramps on Bouldin Island West Pond?
- Bouldin Island West Pond has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lighthouse Resort and Marina.
Explore Bouldin Island West Pond across LakeGrade
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Where this data comes from
11 measurements from 1 monitoring station, 2022–2024. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- USGS California Water Science Center
USGS-CA11 samples · 2022–2024
Analytical methods
- Plant pigments, sonication & 445
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
Named boat-access points from the USGS National Boat Ramps inventory