Marion Reservoir
General data
- Name: Marion Reservoir
- Water system: Mississippi River
- Water type: Artificial lake
- Progression: North Cottonwood River -> Cottonwood River (Kansas) -> Neosho River (Grand River) -> Arkansas River -> Mississippi River -> Gulf of Mexico -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
Marion Reservoir is a man-made lake in central Kansas, located mainly in Marion County, a bit northwest of the town of Marion. The reservoir was completed in 1968 for flood control and is operated by the Army Corps of Engineers. It has surface area about 25 km² and shoreline 182 km. The lake is a popular outdoor spot in central Kansas for fishing ( walleye, white bass, crappie, channel catfish, flathead catfish).