ANALYSIS OF GROUNDWATER POTENTIALITY ZONES OF TAPI BASIN IN NANDURBAR DISTRICT, USING GIS-BASED AHP APPROACH

Abstract

Ground Water is one of the prime sources of fresh water contributing significantly for the survival of mankind. Groundwater is globally used for drinking and domestic purposes in both urban and rural areas. As the demand and needs of the population towards water is growing, The value of water is felt in all sectors. At the same time, because of less rainfall surface water resources are becoming insufficient to fulfil the water demand. In this context, There is a need of systematic planning of ground water improvement using modern techniques and there is a need to demarcate groundwater potential area for the proper management and utilization of water. Groundwater Resources have not yet been properly exploited. Keeping this in view, the present study has been undertaken to delineate the ground water potential zone in Tapi River Basin in Nandurbar District sub watershed area using RS and GIS approach. The present study also demonstrates the use of the geospatial technique for mapping of groundwater quality of  Tapi basin  area in entire district. The multiple thematic layers of influencing parameters viz. geology, geomorphology, soil, slope, drainage density, rainfall and land use are used in the study. AHP is applied to these factors and potential recharge zonesare identified. Based on the field condition, weight and rank values were assigned to respective themes and their classes. In this research Paper, demarcate groundwater potential  zone in  entire tapi river basin.