Hadlock Pond is a 194-acre cold, clear oligotrophic lake in Washington County, New York. Water quality is graded B based on 1 sampling years through 2020. Compared to the 2 other monitored lakes in Washington County, Hadlock Pond ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, New York DNR, last sampled 2020-09-26. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 14.6 ft. Trophic State Index: 38.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 14.6 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 38 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 194 acres |
Where to stay near Hadlock Pond
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Fishing Hadlock Pond
Location
County Ranking
Ranked #1 of 3 lakes in Washington County
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Explore Hadlock Pond across LakeGrade
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Low nutrients, clear water, excellent for swimming
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Reservoir Info (USACE NID)
Hadlock Pond is a man-made reservoir impounded by the Hadlock Pond Dam (completed 1896), built primarily for recreation on the TR-HALFWAY CREEK; earth-type dam, 29 ft tall and 850 ft long.
- Surface area
- 194 ac
- Normal storage
- 1,604 ac-ft
- Max storage
- 2,635 ac-ft
- Drainage area
- 8.79 sq mi
- Hazard class
- High
- Owner
- TOWN OF FORT ANN
Source: USACE National Inventory of Dams, NID ID NY00625 · Operator website
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Hadlock Pond under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Fort Ann (V) WwtpFort Ann · 4.4 mi away · NPDES NY0030627Recent violation
- Former Sunoco StationFort Ann · 4.6 mi away · NPDES NY0249033
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: 2020-09-26
Monitoring stations: 1