Longpoint Lake
Longpoint Lake in Chautauqua County, New York is not rated for water quality — its monitoring record does not meet the evidence bar.
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Why Longpoint Lake 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 Longpoint Lake, 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 NYSDEC and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Longpoint Lake is a lake in Chautauqua County, New York.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2025-05-08. 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 Longpoint Lake
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 Longpoint Lake
Compare lakeside cabins, hotels, and vacation rentals near Longpoint Lake in Chautauqua County, New York — 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 Longpoint Lake
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Fishing Longpoint Lake
Nearby Lakes in Chautauqua County
Frequently asked questions about Longpoint Lake
What is the water quality grade for Longpoint Lake?
- Longpoint Lake in Chautauqua County, New York is not rated for water quality — its monitoring record does not meet the evidence bar.
Is Longpoint Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Longpoint Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Longpoint Lake across LakeGrade
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Where this data comes from
11 measurements from 1 monitoring station, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Rensselaer Polytechnic Institute
RPI11 samples · 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
Lake size & watershed from HydroLAKES (HydroSHEDS)