Hirakud -I (Hydrology)
Catchment : 83400 Sq. Km (32,200 Sq. Mile)
| Rain Fall (mm) | Original | Revised |
|---|---|---|
| Mean Annual | 1381.25 (1900-45) | 1038 |
| Maximum Annual | 1808.73 (1919) | 2518 |
| Minimum Annual | 940.31 (1902) | 607 |
| Run-off (M.ha.m) | Original | Post Construction |
|---|---|---|
| Average Annual | 6.17 (1926-46) | 3.36 (1958-92) |
| Maximum Annual | 8.62 (1919) | 9.09 (1961) |
| Minimum Annual | 2.54 (1902) | 1.14 (1979) |