Sodus Bay Lake
Wayne County, New YorkView mapDirections
Not enough samples to grade — no EPA ecoregion for this lake, so the National Lakes Assessment condition thresholds cannot be applied. No letter yet. Here is what we do have.
- Impaired · Nutrients (phosphorus, nitrogen)
- Limited data
Sodus Bay Lake in Wayne County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 7.1 ft visibility. Phosphorus: 24 µg/L. Chlorophyll-a (algae): 11.7 µg/L.
- Clarity
- 7.1 ft
- Trend
- ↑ Improving
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Stays near Sodus Bay Lake
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Watch Sodus Bay Lake’s letter
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Why Sodus Bay Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Sodus Bay Lake, no EPA ecoregion for this lake, so the National Lakes Assessment condition thresholds cannot be applied. Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. 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.
Sodus Bay Lake is a lake in Wayne County, New York. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2023-09-27. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Sodus Bay 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 Sodus Bay Lake
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 7.1 ft. Phosphorus 24 µg/L. Chlorophyll-a 11.7 µg/L. TSI 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.1 ft | Not graded |
| Phosphorus | 24 µg/L | Not graded |
| Chlorophyll-a (Algae) | 11.7 µg/L | Not graded |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Fishing Sodus Bay Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +1.733 m/yr | 2 |
EPA Impairment Status
Sodus Bay 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 NY0302-0020 · Official waterbody report
Regulated Pollution Sources Nearby
4 EPA-permitted facilities operate within about 5 miles of Sodus Bay Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 2 facilities have a reported Clean Water Act violation in the past three years.
- Sodus Point (V) WwtpSodus Point · 1.4 mi away · NPDES NY0028088MajorRecent violation
- Sodus (V) StpSodus · 4.4 mi away · NPDES NY0021482Recent violation
- Sodus Bulk PlantSodus · 3.8 mi away · NPDES NY0107735
- Village Of Sodus Lake Water Treatment PlantSodus · 4.5 mi away · NPDES NY0246832
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.
Graded lakes near Sodus Bay Lake
Sodus Bay Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Wayne County
Frequently asked questions about Sodus Bay Lake
Where is Sodus Bay Lake?
- Sodus Bay Lake is a lake in Wayne County, New York. LakeQuality has not rated this lake (UNRATED) — no EPA ecoregion for this lake, so the National Lakes Assessment condition thresholds cannot be applied.
What is the water quality grade for Sodus Bay Lake?
- Sodus Bay Lake in Wayne County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 7.1 ft visibility. Phosphorus: 24 µg/L. Chlorophyll-a (algae): 11.7 µg/L.
Is Sodus Bay Lake safe to swim in?
- The letter is not a swimming clearance. Sodus Bay Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Explore Sodus Bay Lake across LakeQuality
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Where this data comes from
18 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS New York Water Science Center
USGS-NY18 samples · 2023
Analytical methods
- Secchi disk method
- P, wu, WCA, persulfate CF color
- Plant pigments, sonication & 445
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)