Sustainable development and management of ground water resources necessitates assessment of availability of ground water, its existing utilisation and balance resources for future utilisation. In India, ground water resources estimation at a Country/ State level is being carried out at periodical intervals.

Dynamic groundwater resources of India have been estimated using groundwater resource estimation methodology-1997. The methodology uses the water-level fluctuation technique and empirical norms for recharge estimation. The groundwater utilization is also estimated.