Lake Waccabuc is a productive, nutrient-rich eutrophic lake in Westchester County, New York. Water quality is graded D based on 1 sampling years through 2020. Compared to the 5 other monitored lakes in Westchester County, Lake Waccabuc ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, New York DNR, last sampled 2020-09-14. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 5.7 ft. Trophic State Index: 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.7 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Waccabuc
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Fishing Lake Waccabuc
Location
County Ranking
Ranked #4 of 6 lakes in Westchester County
Nearby Lakes in Westchester County
Explore Lake Waccabuc across LakeGrade
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High nutrients, frequent algae, reduced clarity
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More records, surveys & data sources
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
Source: EPA ATTAINS assessment unit NY1302-0140 · Official waterbody report
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
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.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2020-09-14
Monitoring stations: 1