Ocheyedan River

General data
- Name: Ocheyedan River
- Water system: Missouri River
- Water type: River
- Progression: Little Sioux River -> Missouri River -> Mississippi River -> Gulf of Mexico -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
Description
The Ocheyedan River is a tributary of the Little Sioux River, 58 mi (93 km) long, in southwestern Minnesota and northwestern Iowa in the United States. Via the Little Sioux and Missouri Rivers, it is part of the watershed of the Mississippi River. The river has been channelized for much of its length.