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Address : Stete Remote Sensing Application Centre, India
Celebration date : 8 Monday September 2008
Author name : Sharma, Trilok Shanker; Kalra, Nand Kumar

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  • Article title : Remote sensing and GIS approach in sustainable development and management of the ground water resources in semi-arid regions of the Thar Desert
    Article type : Hydrogeology
    Location : International Geological Congress,oslo 2008

    Fulltext :

    The western Rajasthan is occupied by the Great Thar desert having monotonous physiography of sand dunes and aeolian plains with xerophytic vegetation with the extremes of climate posing harsh conditions for the survival of life yet it is the most populous desert of the world. Drought is a recurring phenomenon occurring every second or third year due to monsoon failure and erratic rainfall which leads to the problem of crop failure, depletion of water from ponds and lakes, reduced fodder availability and lowering of the ground water table. In the event of crisis ground water is the only source of water for drinking and irrigation purposes. With increase in population demand for ground water has increased many folds and dug wells have been replaced by the tube wells and the bore wells. On availability of satellite data on various resolutions, Remote sensing technology coupled with GIS is increasingly used for acquiring data specially, with regard to the factors controlling the ground water regime these include geomorphology of the terrain, lithology and the structure of the strata and recharge conditions of the area. In the present study different thematic layers such as geomorphology, lithology, structure and drainage network in the area have been studied using IRS-1C/1D geo-coded FCC of LISS-III on 1:50000 scales pertaining to different seasons and well data have been collected from field. Geomorphologically, the landforms in the area can be classified into three types based on their origin which include aeolian (aeolian plains, dune complexes, inter-dunal depressions, obstacle sand dunes), alluvial (alluvial plains and valley fills) and fluvial (residual hills, denudational hills, pediplains and pediments). Geologically the area comprises of rhyolites and granites belonging to the Malani Suite of Igneous rocks which are overlain by the alluvium of recent origin. The area is traversed by some lineaments which are identifiable in satellite data. The thematic maps and secondary data have been compiled in GIS environment and analyzed so as to make ground water resource development plan. It depicts the ground water prospective zones and the suitable locations for the recharge structures for restoring ground water level. This map will prove helpful for future planning, sustainable development and management of the ground water resources in the arid and semi-arid regions of the Thar Desert of India.

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