Schroon Lake
Essex County, New YorkView mapDirections
NY DEC publishes the water-quality measurements for Schroon Lake. Here is what has been measured.
- Impaired · Mercury
- 59 ft max depth
- Public access
- Limited data
Schroon Lake in Essex County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 14.1 ft visibility.
Schroon Lake is a lake in Essex County, New York with an estimated average depth of about 59 feet. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-09-24. Methodology: how these readings are compared.
Schroon Lake has one public boat landing. If you are planning to stay, you can search lake houses and cabins around Schroon Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What Schroon Lake is good for
From access and monitoring records, not editorial picks.
- Clear water14.1 ft of visibility
- Boat launch1 documented ramp
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Schroon Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Schroon 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 Schroon Lake
These are the measurements NY DEC publishes for Schroon 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.
Ask about Schroon Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~59 ft est.
Public access
Yes
Listed by NY DEC
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 Schroon Lake.
Lake Size & Watershed
Watershed (drainage) area
464 sq mi
HydroLAKES / HydroSHEDS
Surface area
5,404 acres
HydroLAKES / HydroSHEDS
Shoreline
30.9 mi
HydroLAKES / HydroSHEDS
Elevation
807 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.
Recreation & Access
- Schroon LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Schroon Lake
Compare lakeside cabins, hotels, and vacation rentals near Schroon Lake in Essex County, New York — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Schroon Lake
Prices for Oct 23–25, 4 adults. Change dates on the map below.
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Fishing Schroon Lake
EPA Impairment Status
Schroon Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Aquatic life.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NY1104-0002 · Official waterbody report
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Schroon Lake under Clean Water Act (NPDES) discharge permits. 2 facilities have a reported Clean Water Act violation in the past three years.
- Word Of Life CampSchroon Lake · 3.5 mi away · NPDES NY0130273Recent violation
- Schroon Lake WwtpSchroon Lake · 4.2 mi away · NPDES NY0020231Recent violation
- Word Of Life Island WwtpSchroon Lake · 3.3 mi away · NPDES NY0129623
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 Essex County
Frequently asked questions about Schroon Lake
Where is Schroon Lake?
- Schroon Lake is a lake in Essex 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 Schroon Lake?
- Schroon Lake in Essex County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 14.1 ft visibility.
Is Schroon Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Schroon Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Schroon Lake?
- No published bathymetric survey covers Schroon Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 59 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there boat ramps on Schroon Lake?
- Schroon Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Schroon Lake. Public access is listed as yes.
Can I fish at Schroon Lake?
- Schroon Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by New York's fish and wildlife agency, so check its current regulations before you go.
Explore Schroon Lake across LakeQuality
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Where this data comes from
16 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
NALMS16 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
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory