Warn Lake
Chenango County, New YorkView mapDirections
NY DEC publishes the water-quality measurements for Warn Lake. Here is what has been measured.
- Limited data
Warn Lake in Chenango County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 14.1 ft visibility.
Warn Lake is a lake in Chenango County, New York.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-09-20. Methodology: how these readings are compared.
What Warn Lake is good for
From access and monitoring records, not editorial picks.
- Clear water14.1 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Warn Lake is safe to swim in today is a call for the New York Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Warn Lake
These are the measurements NY DEC publishes for Warn Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 14.1 ft. TSI 39.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 14.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 39 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
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Answers come straight from the public measurements and survey records on this page.
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Fishing Warn Lake
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Warn Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Oxford (V) StpOxford · 4.9 mi away · NPDES NY0156876Recent violation
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 Warn Lake
Where is Warn Lake?
- Warn Lake is a lake in Chenango County, New York. Its water-quality measurements are published by NY DEC and shown on this page as reported.
What is the water quality of Warn Lake?
- Warn Lake in Chenango County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 14.1 ft visibility.
Is Warn Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Warn Lake across LakeQuality
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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)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)