Melvern Lake
General data
- Name: Melvern Lake
- Water system: Missouri River
- Water type: Artificial lake
- Progression: Marais des Cygnes River -> Osage River -> Missouri River -> Mississippi River -> Gulf of Mexico -> Atlantic Ocean -> Planet Earth
- Climates: Subtropical
- Continents: North America
- Countries: United States of America
Melvern Dam is a dam in Osage County, Kansas. The earthen dam was completed in 1970, and the reservoir completely filled in 1975, as a flood control project of the United States Army Corps of Engineers. The dam impounds the Marais des Cygnes River, notorious for its destructive flooding, notably in the Great Flood of 1951.
The reservoir it creates, Melvern Lake, has a water surface of 28 km2 and a maximum capacity of 0.448 km3, although normal storage is 0.190 km3. Recreation includes fishing, hunting, boating and camping in the five parks surrounding the lake.