Pontoosuc Lake
General data
- Name: Pontoosuc Lake
- Water system: Atlantic Ocean
- Water type: Natural lake
- Progression: West Branch Housatonic River -> Housatonic River -> Long Island Sound -> Atlantic Ocean -> Planet Earth
- Climates: Continental
- Continents: North America
- Countries: United States of America
Pontoosuc Lake is a 511-acre lake located in Berkshire County, Massachusetts, and its outflow feeds into the Housatonic River watershed.