| Type of rain | BV area (ha) | Run-off water (mm) | Volume of water runoff (m3) | Runoff (m3/s) | Runoff coefficient (%) | Maximum lake storage capacity (m3) |
| 4 h - 15 mn type DESBORDES | 1124.1 | 88.355 | 953,880 | 47 | 86.5 | 122 425 |
| 4 h - 30 mn type DESBORDES | 1124.1 | 88.465 | 955,320 | 47.16 | 86.5 | |
| 4 h - 60 mn type DESBORDES | 1124.1 | 88.44 | 955,070 | 48.15 | 86.5 | |
| 4 h - 120 mn type DESBORDES | 1124.1 | 88.435 | 955,020 | 48.83 | 86.5 | |
| KEIFER type rain | 1124.1 | 101.935 | 1,063,020 | 61.12 | 78.8 |