Lake Lincolndale
Westchester County, New York22 acresView 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)
- Limited data
Lake Lincolndale in Westchester County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2.8 ft visibility. Surface area: 22 acres.
- Clarity
- 2.8 ft
- Area
- 22 acres
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Watch Lake Lincolndale’s letter
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Why Lake Lincolndale has no grade
Lake Lincolndale 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, Lake Lincolndale is Not Rated — not an F. Its 2.8-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.
Lake Lincolndale is a 22-acre lake in Westchester County, New York.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-09-20. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Lake Lincolndale 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 Lake Lincolndale
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 2.8 ft of visibility. TSI 62.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.8 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 62 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 22 acres |
No bathymetric survey has been published for Lake Lincolndale, so its depth is not documented here.
Fishing Lake Lincolndale
Reservoir Info (USACE NID)
Lake Lincolndale is a man-made reservoir impounded by the Lake Lincolndale Dam (completed 1935), built primarily for recreation on the TR-PLUM BROOK; earth-type dam, 22 ft tall and 580 ft long.
- Surface area
- 22 ac
- Normal storage
- 170 ac-ft
- Max storage
- 275 ac-ft
- Drainage area
- 0.54 sq mi
- Hazard class
- High
- Owner
- LAKE LINCOLNDALE PROPERTY OWNERS ASSOCIATION
Source: USACE National Inventory of Dams, NID ID NY00102 · Operator website
EPA Impairment Status
Lake Lincolndale 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 NY1302-0089 · Official waterbody report
Regulated Pollution Sources Nearby
20 EPA-permitted facilities operate within about 5 miles of Lake Lincolndale under Clean Water Act (NPDES) discharge permits. 6 facilities have a reported Clean Water Act violation in the past three years.
- Country Manor StpMahopac · 1.1 mi away · NPDES NY0029017Recent violation
- Lincoln Hall StpLincolndale · 1.2 mi away · NPDES NY0036994Recent violation
- Heritage Hills StpSomers · 2 mi away · NPDES NY0026891Recent violation
- Somers High School & Primrose Elem CampusLincolndale · 2.2 mi away · NPDES NY0035483Recent violation
- The Paramount At Somers Rehabilitation & NursingSomers · 3.2 mi away · NPDES NY0101877Recent violation
- Seven Springs Sewer CorpPurdys · 3.7 mi away · NPDES NY0029653Recent violation
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 Lincolndale
Where is Lake Lincolndale?
- Lake Lincolndale 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 Lake Lincolndale?
- Lake Lincolndale in Westchester County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2.8 ft visibility. Surface area: 22 acres.
Is Lake Lincolndale safe to swim in?
- The letter is not a swimming clearance. Lake Lincolndale is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
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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)