Silver Lake
Wyoming County, New York761 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)
- 57 ft max depth
- Limited data
Silver Lake in Wyoming County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 8.5 ft visibility. Surface area: 761 acres.
- Clarity
- 8.5 ft
- Max depth
- ~57 ft est.
- Area
- 761 acres
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Watch Silver Lake’s letter
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Why Silver Lake has no grade
Silver 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, Silver Lake is Not Rated — not an F. Its 8.5-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.
Silver Lake is a 761-acre lake in Wyoming County, New York with an estimated average depth of about 57 feet.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-09-27. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Silver Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Water quality measurements for Silver Lake
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 8.5 ft. TSI 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~57 ft est. |
| Average Depth | ~24 ft est. |
| Surface Area | 761 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 Silver 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 Silver Lake
Reservoir Info (USACE NID)
Silver Lake is a man-made reservoir impounded by the Silver Lake Dam (completed 1982), built primarily for recreation on the SILVER LAKE OUTLET; other-type dam, 15 ft tall and 120 ft long.
- Surface area
- 761 ac
- Normal storage
- 2,830 ac-ft
- Max storage
- 3,345 ac-ft
- Drainage area
- 15.8 sq mi
- Hazard class
- Significant
- Owner
- VILLAGE OF PERRY
All listed purposes: Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID NY00869 · Operator website
EPA Impairment Status
Silver Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NY0403-0002 · Official waterbody report
Regulated Pollution Sources Nearby
5 EPA-permitted facilities operate within about 5 miles of Silver Lake under Clean Water Act (NPDES) discharge permits. 3 facilities have a reported Clean Water Act violation in the past three years.
- Perry (V) WwtpPerry · 3.1 mi away · NPDES NY0022985Recent violation
- Morton Salt, IncSilver Springs · 3.5 mi away · NPDES NY0000418Recent violation
- Castile (V) WwtpCastile · 4.8 mi away · NPDES NY0269336Recent violation
- Warsaw Water Trt PlantWarsaw · 4.5 mi away · NPDES NY0025607
- Wyomig County Highway GarageRock Glen · 4.5 mi away · NPDES NY0275808
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 Wyoming County
Frequently asked questions about Silver Lake
Where is Silver Lake?
- Silver Lake is a lake in Wyoming 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 Silver Lake?
- Silver Lake in Wyoming County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 8.5 ft visibility. Surface area: 761 acres.
Is Silver Lake safe to swim in?
- The letter is not a swimming clearance. Silver Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Silver Lake?
- No published bathymetric survey covers Silver Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 57 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 761 acres.
Explore Silver Lake across LakeQuality
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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)