Lake Spavinaw
General data
- Name: Lake Spavinaw
- Water system: Mississippi River
- Water type: Artificial lake
- Progression: Spavinaw Creek -> Neosho River (Grand River) -> Arkansas River -> Mississippi River -> Gulf of Mexico -> Atlantic Ocean -> Planet Earth
- Climates: Subtropical
- Continents: North America
- Countries: United States of America
Lake Spavinaw is a reservoir in northeastern Oklahoma, created by damming Spavinaw Creek. Water from Spavinaw Creek flows southwest into the Neosho (Grand) River system. Lake Spavinaw is an important water supply lake for Tulsa, Oklahoma, so its outflow is carefully managed.