The inputs for realitistic estimation of groundwater resource and the draft derived from satellite data, as mentioned earlier, enable estimation of its balance more accurately which ultimately helps in the assessment of the stage of development. The demonstrative studies carried out at NRSC have shown that some of the areas which were categorized earlier as white through conventional approach have been re-categorized into gray or dark areas when refinements were made in the recharge and draft estimation based on inputs derived from satellite data. In many cases in the conventional approach it has been observed that the recharge is over estimated and draft is under estimated. Use of satellite image –derived inputs can rectify such anomalies and help in proper categorization of the areas in terms of development.