Glen Lake is a cold, clear oligotrophic lake in Warren County, New York. Water quality is graded A based on 1 sampling years through 2020. The lake supports 2 documented fish species including Brown Trout and Rainbow Trout. Compared to the 8 other monitored lakes in Warren County, Glen Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, New York DNR, last sampled 2020-09-27. 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 ft down. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 16 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 Glen Lake
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Glen Lake
Location
County Ranking
Ranked #4 of 9 lakes in Warren County
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Explore Glen Lake across LakeGrade
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Low nutrients, clear water, excellent for swimming
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More records, surveys & data sources
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
7 EPA-permitted facilities operate within about 5 miles of Glen Lake under Clean Water Act (NPDES) discharge permits, including 3 classified by the EPA as major dischargers. 3 facilities have a reported Clean Water Act violation in the past three years.
- Finch Paper, LlcGlens Falls · 4.3 mi away · NPDES NY0005525MajorRecent violation
- Essity Professional Hygiene North America LlcSouth Glens Falls · 4.4 mi away · NPDES NY0007226MajorRecent violation
- Glens Falls (C) WwtpGlens Falls · 4.7 mi away · NPDES NY0029050MajorRecent violation
- Northway PlazaQueensbury · 2.2 mi away · NPDES NY0251704
- King Phillips CampgroundLake George, Town Of · 2.4 mi away · NPDES NY0296643
- Nys Route 9N Self StorageLake George · 3.4 mi away · NPDES NY0296724
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2020-09-27
Monitoring stations: 1