Lake Sunnyside is a cold, clear oligotrophic lake in Warren County, New York. Water quality is graded A based on 1 sampling years through 2020. Compared to the 8 other monitored lakes in Warren County, Lake Sunnyside ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, New York DNR, last sampled 2020-09-20. 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 17.8 ft down. Trophic State Index: 36.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 17.8 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 36 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Lake Sunnyside
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Fishing Lake Sunnyside
Location
County Ranking
Ranked #5 of 9 lakes in Warren County
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Low nutrients, clear water, excellent for swimming
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Regulated Pollution Sources Nearby
5 EPA-permitted facilities operate within about 5 miles of Lake Sunnyside under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger.
- Ciba-Geigy CorpGlens Falls · 4.8 mi away · NPDES NY0005321Major
- Imperial Acres SubdivisionQueensbury, Town Of · 0.5 mi away · NPDES NY0266272
- Forest Ridge Residential SubdivisionLake George, Town Of · 2.9 mi away · NPDES NY0266183
- Washington Co Sd#1 WwtpQueensbury · 3 mi away · NPDES NY0074900
- Top O' The WorldLake George · 4.5 mi away · NPDES NY0131792
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)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2020-09-20
Monitoring stations: 1