Department of Environmental Conservation

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Cossayuna Lake

Physical Features:

Elevation: 481 feet
Area: 661 acres
Shoreline Length: 8.1 miles
Max Depth: 25 feet
County & Town: Washington County, Town of Argyle


Located off Route 40 at the Hamlet of South Argyle, east on County Route 49 to East Shore Road. This is a hard surface ramp with parking for 30 cars and trailers. This site is accessible for persons with disabilities.

For more information on this launch including Google Maps driving directions, visit the Boat Launch Sites for Washington County page.

Fish Species:

Man with largemouth bass from Cossayuna Lake
Largemouth bass from Cossayuna Lake

Tiger Muskellunge, Smallmouth Bass, Largemouth Bass, Black Crappie, Yellow Bullhead, Brown Bullhead, Rock Bass, Pumpkinseed, Bluegill and Yellow Perch.


Cossayuna Lake is stocked annually with tiger muskies, providing a unique angling opportunity within the county. The lake also supports robust populations of largemouth bass, bluegill and yellow perch.

Ice Fishing:

Ice fishing is permitted on Cossayuna Lake.

Fishing Regulations:

Statewide regulations apply. See the Freshwater Fishing Regulations Guide (PDF).

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