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Groundwater Prospects and Recharge Zone Mapping                    Back to other RS applications

The occurrence and movement of groundwater is mainly controlled by many factors such as rock types, landforms, geological structures, soil, land use, rainfall etc. Remote sensing based groundwater prospect zone map serves as a base for further exploration using hydro geological and geophysical methods to locate well sites. Studies have shown that if remote sensing data are used at first level to delineate prospective zones and further followed up by hydro geological and geophysical surveys, higher success could be achieved besides savings in terms of cost, time and work. Further remote sensing data helps in identifying suitable areas for recharging ground water. Under Rajiv Gandhi National Drinking Water Mission, funded by the Department of Drinking Water Supply of the Ministry of Rural Development, ground water prospects and recharge zone maps on 1:50,000 scale was taken up by ISRO in phases using IRS data. So far, 14 states (Andhra Pradesh (Part), Madhya Pradesh, Rajasthan, Karnataka, Kerala, Chattisgarh, Gujarat, Orissa, Himachal Pradesh, Jharkhand, Assam, Punjab, Uttarakhand and Uttar Pradesh (Part) have been completed and the maps have been provided to State Ground Water Departments and other concerned departments. The maps have been used for locating well sites and recharge structures. The feedback shows that about 275,800 wells have been drilled with more than 90% success rate and about 9000 recharge structures have been constructed. The work is under progress for the states of Jammu & Kashmir, Maharashtra, Uttar Pradesh-Part, West Bengal-Part, Haryana and Arunachal Pradesh.

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