Lake Ontelaunee

General data
- Water type: Artificial lake
- Progression: Maiden Creek -> Schuylkill River -> Delaware River -> Delaware Bay -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
Description
Lake Ontelaunee is a 4.38 km2 reservoir that is located in Berks County, Pennsylvania. Blue Marsh Lake, another artificial reservoir, is the largest lake in Berks County, making Lake Ontelaunee the second-largest lake.