Oscaleta Lake
Westchester County, New YorkView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- Impaired · Nutrients (phosphorus, nitrogen)
- 41 ft max depth
- Limited data
Oscaleta Lake in Westchester County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 8.4 ft visibility.
- Clarity
- 8.4 ft
- Max depth
- ~41 ft est.
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Watch Oscaleta Lake’s letter
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Why Oscaleta Lake has no grade
Oscaleta Lake has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Oscaleta Lake is Not Rated — not an F. Its 8.4-foot median from 8 readings collected 2020 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. Everything below that has been measured is still reported on this page.
Sampling is run by NYSDEC and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Oscaleta Lake is a lake in Westchester County, New York with an estimated average depth of about 41 feet.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-09-14. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Oscaleta Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Water quality measurements for Oscaleta Lake
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 8.4 ft. TSI 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.4 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~41 ft est. |
| Average Depth | ~15 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 Oscaleta Lake.
Lake Size & Watershed
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.
Fishing Oscaleta Lake
EPA Impairment Status
Oscaleta Lake 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 NY1302-0141 · Official waterbody report · Matched by proximity (0.13 km)
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Oscaleta Lake under Clean Water Act (NPDES) discharge permits.
- Shaft 13 Delaware AqueductBedford · 2.1 mi away · NPDES NY0265004
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 Oscaleta Lake
Where is Oscaleta Lake?
- Oscaleta Lake is a lake in Westchester County, New York. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Oscaleta Lake?
- Oscaleta Lake in Westchester County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 8.4 ft visibility.
Is Oscaleta Lake safe to swim in?
- The letter is not a swimming clearance. Oscaleta Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Oscaleta Lake?
- No published bathymetric survey covers Oscaleta Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 41 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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated 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)