| Reservoir | Upstream area (km2) | Date of impoundment | Year of surveys | Volume of the normal pool (m3) |
| BC 1 | 18.21 | 1 Jun. 1956 | 1956, 2007 | 327,000 |
| DC 3 | 14.01 | 13 Nov. 1953 | 1952, 1960, 1965, 1971, 2007 | 183,700 |