Primary inflows Average depth 8.6 m (28.2 ft) Area 4,214 km² Mean depth 8.6 m First flooded 1982 | Primary outflows São Francisco River Surface area 4,214 km (1,627 sq mi) Max. depth 30 m (98 ft) Surface elevation 392 m Catchment area 498,425 km² Inflow source São Francisco River | |
 | ||
The Sobradinho Reservoir (Portuguese: Lago de Sobradinho) is a large reservoir located in Sobradinho, north of the Brazilian state of Bahia. The reservoir measures approximately 320 km (200 mi) long, 4,214 km2 (1,627 sq mi) in surface area, and a storage capacity of 34.1 km3 (8.2 cu mi) at its nominal elevation of 392.5 m (1,287.7 ft), making it the 12th largest reservoir (artificial lake) in the world. The lake encloses the waters of the São Francisco River, one of the largest and most important rivers in Brazil.
Map of Sobradinho Reservoir, State of Bahia, Brazil
The reservoir, which represents 60.4% of the hydroelectric power resources of the Northeast of Brazil, has conditions to guarantee the power supply for the region for two years but its water level is highly variable. In some drought years the energy supply is threatened.