Onondaga Lake
Onondaga Lake in Onondaga County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 2976 acres.
- Area
- 2,976 acres
- Public access
- Yes
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Why Onondaga 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 Onondaga Lake, no water-quality sampling on record for this lake.
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.
Onondaga Lake is a 2,976-acre lake in Onondaga County, New York. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled recent years. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Onondaga Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Onondaga Lake
Compare lakeside cabins, hotels, and vacation rentals near Onondaga Lake in Onondaga County, New York — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Onondaga Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 2,976 acres |
| Public Access | Yes |
No bathymetric survey has been published for Onondaga Lake, so its depth is not documented here.
Recreation & Access
- Onondaga Lake Marina, Mile 167.18Public
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Onondaga Lake
Nearby Lakes in Onondaga County
Frequently asked questions about Onondaga Lake
Where is Onondaga Lake?
- Onondaga Lake is a lake in Onondaga County, New York. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Onondaga Lake?
- Onondaga Lake in Onondaga County, New York is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 2976 acres.
Is Onondaga Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Onondaga Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Onondaga Lake?
- Onondaga Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Onondaga Lake Marina, Mile 167.18. Public access is listed as yes.
Explore Onondaga Lake across LakeQuality
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Where this data comes from
Measurements for Onondaga Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory