Hadlock Pond
Washington County, New York194 acresView mapDirections
NY DEC publishes the water-quality measurements for Hadlock Pond. Here is what has been measured.
- 70 ft max depth
- Limited data
Hadlock Pond in Washington County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 14.6 ft visibility. Surface area: 194 acres.
Hadlock Pond is a 194-acre lake in Washington County, New York with an estimated average depth of about 70 feet.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-09-26. Methodology: how these readings are compared.
Hadlock Pond covers about 190 acres in Washington County. If you are planning to stay, you can search lake houses and cabins around Hadlock Pond on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What Hadlock Pond is good for
From access and monitoring records, not editorial picks.
- Clear water14.6 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Hadlock Pond 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 Hadlock Pond
These are the measurements NY DEC publishes for Hadlock Pond, 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 14.6 ft. TSI 38.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 14.6ft | 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. | 38 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Hadlock Pond
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~70 ft est.
Surface area
194 acres
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 Hadlock Pond.
Lake Size & Watershed
Watershed (drainage) area
14 sq mi
HydroLAKES / HydroSHEDS
Shoreline
3.3 mi
HydroLAKES / HydroSHEDS
Elevation
446 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.
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Stays near Hadlock Pond
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Top-rated places to stay near Hadlock Pond
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Fishing Hadlock Pond
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
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.
Nearby Lakes in Washington County
Frequently asked questions about Hadlock Pond
Where is Hadlock Pond?
- Hadlock Pond is a lake in Washington 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 Hadlock Pond?
- Hadlock Pond in Washington County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 14.6 ft visibility. Surface area: 194 acres.
Is Hadlock Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Hadlock Pond?
- No published bathymetric survey covers Hadlock Pond, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 70 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 194 acres.
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Where this data comes from
8 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
NALMS8 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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)