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- The Secretary
Central Water Commission
3rd Floor (South) , Sewa Bhawan ,
R.K. Puram, Sector-1
New Delhi – 110066
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Government of India 
(Serving the nation since 1945)
Water resources in the country: As per the assessment done by CWC in the year 2019, the average annual water resource of the river basins of India for the study period of 30 years (1985-2015) has been assessed as 1999.20 BCM. The mean annual rainfall of the basins for the study period of 30 years is 3880 BCM.
It is estimated that owing to topographic, hydrological and other constraints, the utilizable water with conventional approach is 1137 BCM which comprises of 690 BCM of surface water and 447 BCM of replenishable ground water resources.
