Anawanda Lake is a 9-acre cold, clear oligotrophic lake in Sullivan County, New York. Water quality is graded A based on 1 sampling years through 2020. Compared to the 3 other monitored lakes in Sullivan County, Anawanda Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, New York DNR, last sampled 2020-09-28. 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 18.4 ft down. Trophic State Index: 35.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 18.4 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 35 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 9 acres |
Where to stay near Anawanda Lake
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Fishing Anawanda Lake
Location
County Ranking
Ranked #1 of 4 lakes in Sullivan County
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Low nutrients, clear water, excellent for swimming
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Reservoir Info (USACE NID)
Anawanda Lake is a man-made reservoir impounded by the Petrillo Lake Dam (completed 1952), built primarily for recreation on the BUCK BROOK; earth-type dam, 17 ft tall and 480 ft long.
- Surface area
- 9 ac
- Normal storage
- 41 ac-ft
- Max storage
- 68 ac-ft
- Drainage area
- 0.36 sq mi
- Hazard class
- Low
- Owner
- BUCK BROOK ACRES, LLC
Source: USACE National Inventory of Dams, NID ID NY00641 · Operator website · Matched by proximity (0.9 km)
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Anawanda Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Tennanah Lake Twnhse & VillasRoscoe · 2.4 mi away · NPDES NY0145505Recent 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.
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: 2020-09-28
Monitoring stations: 1