GIS -Based Assesment of Ground Water Potential in Tlawng Watershed, Mizoram Zoramkhuma Research Scholar, Department of Geography & Resource Management, Mizoram University, Aizawl Online published on 30 December, 2017. Abstract Ground water is often withdrawn for different purpose. It is important source to meet the water requirements of various sectors including irrigation, domestic and industries. Similar to other parts of Mizoram, groundwater is an important source of water for agricultural and domestic uses in Tlawng watershed. Its physical structure narrow, with a small area and a high-population density create another hindrance in ground water management. The elevation of the terrain of basins is great and steep, meaning that most precipitation becomes runoff and drains directly to the main channel very quickly. It result water resources and water demand are unevenly distributed spatially and temporally. Assessment of ground water potential zones is prerequisite in Tlawng watershed. Shortage has recently become an important issue in Tlawng watershed area; due to more than 50 percent (Census, 2011) of the Mizoram populations are settled in Tlawng watershed. Assessment of ground water is needed to regulate the usage of water resources in order to solve the problem of water shortages. In this study Remote Sensing dataand GIS and techniques will be deployed for assessment of ground water potential zonation. The present study proved geospatial technology Remote Sensing data and GIS techniques are suitable for assessment of ground water potential in Tlawng watershed. For ground water potential assessment thematic layers like Slope, Relative Relief, Lithology, Geological Structure, Drainage Density, Vegetation Cover, Land Use/Land Cover and Rainfall data are integrated using Weighted Overlay technique (Multi Criteria Decision Making). The study reveals that uneven distribution of ground water potential zones over the study areas is mainly determined by the lithology, geological structure, slope and rainfall intensity. Vast areas of valley fills, flood plain and low laying areas have more advantages of ground water potential due to the lithology, slope and proximity of surface water helps ground water recharge. Generally the elevated areas and ridges line belongs to poor ground water potential, due to the rapid runoff and limited vegetation cover. Top Keywords Remote Sensing, GIS, Assessment of ground water, Ground water potential, Ground water potential zones, Tlawng watershed. Top |