SUSTAINABLE DEVELOPMENT AND MANAGEMENT OF SURFACE AND GROUNDWATER IN COOUM SUB BASIN OF CHENNAI BASIN USING REMOTE SENSING AND GIS

摘要

Water is the most valuable renewable natural resource for preserving all forms of living on earth. It is an economically productive resource and it is the main source of economic structures. In recent decades the surface water resources are fully utilized in the 17 most important river basins of Tamil Nadu and this is a main problem in the State. Sub-basins located near East Coast, face seawater intrusion problem. Cooum sub-basin of Chennai basin located in Thiruvallur and Chennai districts suffer due to pollution, saltwater intrusion problems. Hence, a study was undertaken in the Cooum subbasin. Collateral data on groundwater level, quality, soil, geology, drainage, rainfall and as maps were generated using GIS software in digital format. By interpreting high-resolution remote sensing satellite data, thematic layers as land use, geomorphology and waste lands were prepared. Existing anicuts, reservoirs were also marked with details. Water potential assessment was analyzed and sectoral demands were estimated. Degraded areas were distinctly marked. Favorable zones for further development were chosen and the map was prepared. Remedial measures were also suggested. The potential, draft, balance of water were derived scientifically by utilizing modern remote sensing and GIS techniques.