As per ministry of water resources, Govt. of India, the total annual replenishable groundwater resource of the country is estimated as 433 billion cubic meter (BCM). Out of 433 BCM, around 34 BCM is the natural outflow. As such, the net annual groundwater resource of the country is around 399 BCM. Total annual withdrawal of groundwater is estimated as 231 BCM. Out of this 231 BCM of annually withdrawn, 213 BCM is used for irrigation and rest 18 BCM is withdrawn for domestic uses. Fig. 2.2 shows the annual groundwater resources of the country.