Oscawana Lake
Putnam County, New York360 acresView mapDirections
No nutrient or algae sampling on record from NY DEC for this lake.
- Impaired · Nutrients (phosphorus, nitrogen)
- 30 ft max depth
Oscawana Lake in Putnam County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 30 ft. Surface area: 360 acres.
Oscawana Lake is a 360-acre lake in Putnam County, New York with a maximum depth of 30 feet.
Source: EPA Water Quality Portal sampling records, NYSDEC. Methodology: how these readings are compared.
What Oscawana Lake is good for
From access and monitoring records, not editorial picks.
- Deep water30 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Oscawana Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Oscawana 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.
Water quality measurements for Oscawana Lake
These are the measurements NY DEC publishes for Oscawana 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 Oscawana Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
30 ft
Surface area
360 acres
Shoreline
6.1 mi
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Stays near Oscawana Lake
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Fishing Oscawana Lake
EPA Impairment Status
Oscawana Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Aquatic life.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NY1301-0035 · Official waterbody report
Nearby Lakes in Putnam County
Frequently asked questions about Oscawana Lake
Where is Oscawana Lake?
- Oscawana Lake is a lake in Putnam 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 Oscawana Lake?
- Oscawana Lake in Putnam County, New York has water-quality measurements published by NY DEC, shown here as reported. Maximum depth: 30 ft. Surface area: 360 acres.
Is Oscawana Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Oscawana 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 Oscawana Lake?
- Oscawana Lake has a maximum depth of 30 feet. The lake covers 360 acres.
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Where this data comes from
Measurements for Oscawana Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database