India gets over 80 percent of its annual rainfall during the monsoon.

The CWC said most reservoirs in south India had more than average storage, those in Orissa and Gujarat were around the average but those in the north were below.

Agriculture ministries in various states are already advising farmers to move to short duration crops that require less water, though their cultivation may be less profitable.

The CWC said it was providing information of the weekly storage position in these reservoirs to the Crop Weather Watch Group 'for evolving suitable crop strategies and also appraising the situation to various departments and ministries involved in water resources planning'.