OHPC Hydro Power Dam

Hirakud -I (Hydrology)

Catchment : 83400 Sq. Km (32,200 Sq. Mile)

Rain Fall (mm) OriginalRevised
Mean Annual1381.25 (1900-45)1038
Maximum Annual1808.73 (1919)2518
Minimum Annual940.31 (1902)607
Run-off (M.ha.m)OriginalPost Construction
Average Annual6.17 (1926-46)3.36 (1958-92)
Maximum Annual8.62 (1919)9.09 (1961)
Minimum Annual2.54 (1902)1.14 (1979)

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