Lake Pleasant is a cold, clear oligotrophic lake in Hamilton County, New York. Water quality is graded B based on 1 sampling years through 2020. The lake supports 3 documented fish species including Brown Trout, Lake Trout, and Walleye. Compared to the 6 other monitored lakes in Hamilton County, Lake Pleasant ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, New York DNR, last sampled 2020-09-20. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 13.9 ft. Trophic State Index: 39.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13.9 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 39 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Lake Pleasant
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Lake Pleasant
Location
County Ranking
Ranked #7 of 7 lakes in Hamilton County
Nearby Lakes in Hamilton County
Explore Lake Pleasant across LakeGrade
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Species activity outlook by water temperature and season
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Low nutrients, clear water, excellent for swimming
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More records, surveys & data sources
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Lake Pleasant under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Speculator (V) WwtpSpeculator · 1.7 mi away · NPDES NY0026484Recent violation
- Moffitt Beach CampgroundLake Pleasant · 1.8 mi away · NPDES NY0034355
- East Delaware Release ChamberDownsville · 3.2 mi away · NPDES NY0268321
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2020-09-20
Monitoring stations: 1