Lake Waccabuc
Westchester County, New YorkView mapDirections
NY DEC publishes the water-quality measurements for Lake Waccabuc. Here is what has been measured.
- Impaired · Ammonia
- 48 ft max depth
- Limited data
Lake Waccabuc in Westchester County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 5.7 ft visibility.
Lake Waccabuc is a lake in Westchester County, New York with an estimated average depth of about 48 feet.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-09-14. Methodology: how these readings are compared.
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Lake Waccabuc is listed impaired under Clean Water Act §303(d) (IR 5) for ammonia, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Lake Waccabuc 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 Lake Waccabuc
These are the measurements NY DEC publishes for Lake Waccabuc, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 5.7 ft. TSI 52.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5.7ft | 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. | 52 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Waccabuc
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~48 ft est.
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 Lake Waccabuc.
Lake Size & Watershed
Watershed (drainage) area
1 sq mi
HydroLAKES / HydroSHEDS
Surface area
104 acres
HydroLAKES / HydroSHEDS
Shoreline
2.3 mi
HydroLAKES / HydroSHEDS
Elevation
495 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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Fishing Lake Waccabuc
EPA Impairment Status
Lake Waccabuc is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Drinking water, Recreation.
Source: EPA ATTAINS assessment unit NY1302-0140 · Official waterbody report
Regulated Pollution Sources Nearby
6 EPA-permitted facilities operate within about 5 miles of Lake Waccabuc under Clean Water Act (NPDES) discharge permits. 3 facilities have a reported Clean Water Act violation in the past three years.
- Michelle Estates Realty SubdivisionMount Kisco · 2.5 mi away · NPDES NY0214841Recent violation
- Increase Miller Elementary SchGoldens Bridge · 3.3 mi away · NPDES NY0036692Recent violation
- Wild Oaks SdGoldens Bridge · 4.1 mi away · NPDES NY0065706Recent violation
- Waccabuc Country ClubWaccabuc · 0.8 mi away · NPDES NY0105708
- Mobil S/S 17-NN4South Salem · 1.1 mi away · NPDES NY0219762
- Meadows @ Cross River CondominLewisboro · 2.6 mi away · NPDES NY0099520
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 Westchester County
Frequently asked questions about Lake Waccabuc
Where is Lake Waccabuc?
- Lake Waccabuc is a lake in Westchester 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 Lake Waccabuc?
- Lake Waccabuc in Westchester County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 5.7 ft visibility.
Is Lake Waccabuc safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Waccabuc is listed impaired under Clean Water Act §303(d) (IR 5) for ammonia, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Lake Waccabuc?
- No published bathymetric survey covers Lake Waccabuc, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 48 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
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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
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)