Genegantslet Lake is a 112-acre mesotrophic lake in Chenango County, New York. Water quality is graded B based on 1 sampling years through 2020. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 6 other monitored lakes in Chenango County, Genegantslet Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, New York DNR, last sampled 2020-09-15. 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 12 ft. Trophic State Index: 41.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 12 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 41 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 112 acres |
| Public Access | Yes |
Where to stay near Genegantslet Lake
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Fishing Genegantslet Lake
Recreation & Access
Location
County Ranking
Ranked #5 of 7 lakes in Chenango County
Nearby Lakes in Chenango County
Explore Genegantslet Lake across LakeGrade
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Fish species and best lakes in Chenango County
Species activity outlook by water temperature and season
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Moderate nutrients, good water quality
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More records, surveys & data sources
Reservoir Info (USACE NID)
Genegantslet Lake is a man-made reservoir impounded by the Genegantslet Lake Dam (completed 1900), built primarily for recreation on the TR-GENEGANTSLET CREEK; earth-type dam, 10 ft tall and 300 ft long.
- Surface area
- 112 ac
- Normal storage
- 1,019 ac-ft
- Max storage
- 1,064 ac-ft
- Drainage area
- 5.07 sq mi
- Hazard class
- High
- Owner
- GENEGANTSLET LAKE ASSOC.
Source: USACE National Inventory of Dams, NID ID NY00846 · Operator website
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Genegantslet Lake under Clean Water Act (NPDES) discharge permits.
- Bowman Lake State ParkJamesville · 4.6 mi away · NPDES NY0028126
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
Public boat-access points from the USGS National Boat Ramps inventory
Most recent sample: 2020-09-15
Monitoring stations: 1