Lake Ontelaunee is a reservoir located in Berks County, Pennsylvania. It was created in the 1970s by damming the Ontelaunee Creek, primarily for water supply and flood control. The lake covers approximately 1,200 acres and is a popular spot for fishing, boating, and wildlife observation. The lake is home to various fish species, including largemouth bass and crappie, making it a favored destination for anglers. Surrounding the lake are scenic views and recreational areas, providing opportunities for hiking and picnicking. The area is also important for local ecosystems, supporting diverse plant and animal life.