Chenango Lake is a cold, clear oligotrophic lake in Chenango County, New York. Water quality is graded A based on 1 sampling years through 2020. The lake supports 1 documented fish species including Tiger Muskellunge. Compared to the 6 other monitored lakes in Chenango County, Chenango Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, New York DNR, last sampled 2020-09-14. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 16.6 ft down. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 16.6 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Chenango Lake
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Chenango Lake
Location
County Ranking
Ranked #2 of 7 lakes in Chenango County
Nearby Lakes in Chenango County
Explore Chenango 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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Low nutrients, clear water, excellent for swimming
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More records, surveys & data sources
EPA Impairment Status
Chenango Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit NY0601-0013 · Official waterbody report
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
6 EPA-permitted facilities operate within about 5 miles of Chenango Lake under Clean Water Act (NPDES) discharge permits, including 3 classified by the EPA as major dischargers. 5 facilities have a reported Clean Water Act violation in the past three years.
- Norwich Pharmaceuticals, IncNorwich · 4.5 mi away · NPDES NY0004138MajorRecent violation
- Kerry Bio-ScienceNorwich · 4.6 mi away · NPDES NY0004243MajorRecent violation
- Chobani Corporate CampusNorwich · 4.7 mi away · NPDES NY0004146MajorRecent violation
- City Of Norwich Water Filtration PlantNorwich · 3.7 mi away · NPDES NY0284254Recent violation
- South New Berlin Water System Well Filtration FacilityNew Berlin · 4.5 mi away · NPDES NY0284084Recent violation
- Chenango Lake Mobile HomeNew Berlin · 0.6 mi away · NPDES NY0244821
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
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2020-09-14
Monitoring stations: 1