Chenango Lake
Chenango County, New YorkView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- Impaired · Oxygen depletion (low DO)
- 22 ft max depth
- Limited data
Chenango Lake in Chenango County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 16.6 ft visibility.
- Clarity
- 16.6 ft
- Max depth
- ~22 ft est.
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Stays near Chenango Lake
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Watch Chenango Lake’s letter
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Why Chenango Lake has no grade
Chenango Lake has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Chenango Lake is Not Rated — not an F. Its 16.6-foot median from 8 readings collected 2020 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. 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.
Chenango Lake is a lake in Chenango County, New York with an estimated average depth of about 22 feet.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-09-14. Grade methodology: LakeQuality methodology.
What Chenango Lake is good for
From access and monitoring records, not editorial picks.
- Clear water16.6 ft of visibility
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Chenango Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
Water quality measurements for Chenango Lake
These readings exist but are not enough for an A–F grade — see why.
Crystal clear, you can see 16.6 ft down. TSI 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 16.6 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~22 ft est. |
| Average Depth | ~18 ft est. |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. New York has not published bathymetry for Chenango Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Chenango Lake
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
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.
Nearby Lakes in Chenango County
Frequently asked questions about Chenango Lake
Where is Chenango Lake?
- Chenango Lake is a lake in Chenango County, New York. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Chenango Lake?
- Chenango Lake in Chenango County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 16.6 ft visibility.
Is Chenango Lake safe to swim in?
- The letter is not a swimming clearance. Chenango Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
How deep is Chenango Lake?
- No published bathymetric survey covers Chenango Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 22 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
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Where this data comes from
8 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS8 samples · 2020
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
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)