 The basin experiences tropical monsoon climatic conditions.The rainfall is dictated by the southwest monsoon, which varies from (from South to North) near the North–South trending mountain range of the basin but drastically drops to within a distance of towards the east.The average annual precipitation of the basin above the dam in the Upper Bhima River Basin (UBB) has been assessed as out of which (87%) occurs during the four monsoon months (mid June to mid September).