Delineation of Ground water Potential Zone in Burmanallah Sub-basin of South Andaman Island using Geospatial Techniques

Abstract

The water crisis is harmful effect on human life and also one of the most problem in the human society is water resources management. Ground water is one of the prime sources of fresh water contributing significantly for the survival of mankind. However, overexploitation, surface runoff, subsurface ground water discharge, coastal flooding and tsunami inundation have depleted the fresh ground water availability considerably. Assessing the ground water potential zone is extremely important for the protection of water quality and the management of ground water systems. In this context, an attempt has been made to demarcate the Ground water potential zones with the help of Geospatial techniques such as Remote Sensing and Geographic Information System (GIS). Remote sensing techniques have been proved to be very efficient in identifying the Geo-hydrological Characteristics of the study area. Various thematic maps such as lithology, slope, drainage density, geomorphology and lineament are generated using the Landsat TM 2014 satellite data and survey of India (SOI) toposheet in 1:50000 scale. These thematic maps are integrated using GIS tools in order to identify the ground water potential zones. The integration of various thematic maps are effective in the identification of suitable locations for ground water development.