Swan Lake is a lake in Sullivan County, New York. Its water-quality measurements are published by NY DEC and shown on this page as reported.

How deep is Swan Lake?

Swan Lake has a maximum depth of 10.5 feet. The lake covers 326 acres.

Swan Lake

Sullivan County, New York326 acresView map Directions

No nutrient or algae sampling on record from NY DEC for this lake.

Max depth

10.5 ft

Bathymetric survey

Area

326 acres

Surface area

Shoreline

8 mi

Measured length

Impaired · Nutrients (phosphorus, nitrogen)
11 ft max depth

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Swan Lake in Sullivan County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 10.5 ft. Surface area: 326 acres.

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Swan Lake is a 326-acre lake in Sullivan County, New York with a maximum depth of 11 feet.

Source: EPA Water Quality Portal sampling records, NYSDEC. Methodology: how these readings are compared.

Swimming conditions

No reading

Recreation use not supported

Nutrient and algae readings are not a swimming clearance. Swan Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Whether Swan Lake is safe to swim in today is a call for the New York Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Swan Lake

These are the measurements NY DEC publishes for Swan Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data. TSI undefined.

Ask about Swan Lake

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

10.5 ft

Surface area

326 acres

Shoreline

8 mi

Stays via Stay22

Stays near Swan Lake

Compare lakeside cabins, hotels, and vacation rentals near Swan Lake in Sullivan 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 Swan Lake

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Fishing Swan Lake

→ Swan Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Swan Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

Nutrients (phosphorus, nitrogen)

Designated uses not supporting: Recreation.

Source: EPA ATTAINS assessment unit NY1401-0063 · Official waterbody report

Nearby Lakes in Sullivan County

Silver Lake3.9 miView →Briscoe Lake3.5 miView →Revonah Lake4.7 miView →White Lake6 miView →Grossingers Lake4.9 miView →Matawa Lake—View →

Frequently asked questions about Swan Lake

Where is Swan Lake?: Swan Lake is a lake in Sullivan County, New York. Its water-quality measurements are published by NY DEC and shown on this page as reported.
What is the water quality of Swan Lake?: Swan Lake in Sullivan County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 10.5 ft. Surface area: 326 acres.
Is Swan Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Swan 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 Swan Lake?: Swan Lake has a maximum depth of 10.5 feet. The lake covers 326 acres.