Loon Lake
Steuben County, New YorkView mapDirections
NY DEC publishes the water-quality measurements for Loon Lake. Here is what has been measured.
- 17 ft max depth
- Limited data
Loon Lake in Steuben County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 14.8 ft visibility.
Loon Lake is a lake in Steuben County, New York with an estimated average depth of about 17 feet.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-09-30. Methodology: how these readings are compared.
For a place on the water, look through cabin and lake-house rentals near Loon Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Loon Lake is good for
From access and monitoring records, not editorial picks.
- Clear water14.8 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Loon 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 Loon Lake
These are the measurements NY DEC publishes for Loon 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 14.8 ft. TSI 38.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 14.8ft | 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. | 38 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Loon Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~17 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 Loon Lake.
Lake Size & Watershed
Watershed (drainage) area
2 sq mi
HydroLAKES / HydroSHEDS
Surface area
138 acres
HydroLAKES / HydroSHEDS
Shoreline
2.3 mi
HydroLAKES / HydroSHEDS
Elevation
1,699 ft
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.
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Stays near Loon Lake
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Top-rated places to stay near Loon Lake
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Fishing Loon Lake
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Loon Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Wayland (V) StpWayland · 4.9 mi away · NPDES NY0032999Recent violation
- Cohocton Bus GarageCohocton · 3.3 mi away · NPDES NY0245739
- The Gunlocke CompanyWayland · 4.4 mi away · NPDES NY0088153
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 Steuben County
Frequently asked questions about Loon Lake
Where is Loon Lake?
- Loon Lake is a lake in Steuben 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 Loon Lake?
- Loon Lake in Steuben County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 14.8 ft visibility.
Is Loon Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Loon Lake?
- No published bathymetric survey covers Loon Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 17 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)
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)
Lake size & watershed from HydroLAKES (HydroSHEDS)