Centennial Lake is a 50-acre (200,000 m2) reservoir, in a 325-acre (1.315 km2) park in Howard County, Maryland, near Columbia, Maryland and Clarksville, known as Centennial Park. It was created by damming the Centennial Branch of the Little Patuxent River. The lake and the park feature a dam, a wildlife area, a walking trail, boating, fishing, and other recreational activities. The park is owned by the Howard County department of Parks and Recreation.
The lake is used by the county and state for the conservation of various types of fish, such as trout and bass, with fishing restrictions implemented, though an overabundance has resulted in restrictions being lifted at times.