Oros Reservoir
General data
- Name: Oros Reservoir
- Water system: Jaguaribe River
- Water type: Artificial lake
- Progression: Jaguaribe River -> Atlantic Ocean -> Planet Earth
- Climates: Tropical
- Continents: South America
- Countries: Brazil
The Orós Dam or President Juscelino Kubitschek Dam (Portuguese: Barragem Presidente Juscelino Kubitschek de Oliveira) is located on the Jaguaribe River, in the northeastern Brazilian state of Ceará. It has a capacity of 2.1 billion cubic metres, making it the second largest reservoir in the state. Completed in 1961, it was the largest dam in Ceará until the completion of the Castanhão Dam in 2003.