Lake Shawnee was built as a Work Progress Administration project. Construction began in 1935 and was completed on September 3, 1939, when over 5,000 fishermen celebrated the opening day.

Lake Shawnee offers the most surprising recreational opportunities around. Over one million users annually enjoy the beauty and diversity of Lake Shawnee. Lake facilities include The Garden House, Reynolds Lodge, marina, tennis courts, sand volleyball courts, open spaces, campground, golf course, shelter houses, swimming beach with water slide, playgrounds and water activities of every kind. Special events and recreation programs make it a favorite stop in Northeast Kansas. Lake Shawnee campground is open year round for RV and tent camping. Special events are hosted throughout the summer for registered campers. Kansas State Fishing and Trout licenses are required for Lake Shawnee. Shelter houses are available for rental throughout the summer with four shelters available year-round.