IDENTIFICATION OF PERCOLATION SPOT LOCATIONS FOR CHECK DAM CONSTRUCTION USING GIS FOR POONDI BLOCK

Abstract

The cyclic process of water cycle without any interruptions is the promising factor that ensures the existence of living creatures; right from micro organisms to all the other living beings. But nowadays, that water cycle is disturbed due to the prevailing conditions of pollution in environment and thereby the scarcity arises. In the water cycle, rain water and ground water are considered important. Rainwater can be later collected as ground water and taken for our usage. But now, rainfall is highly insufficient thereby ground water level is decreasing. But it can be collected artificially by the construction of check dam at the water holing areas. Poondi is our study area where we found some shortage of water and now coming with a solution. The software used for this are QGIS and Arc GIS. In this paper, the usage of thematic layers of soil texture, soil infiltration, geology, geomorphology, land use land cover, rainfall, drainage and slope (Mohanavelu Senthilkumar et al., 2019) is done. After that, the percolation spots of Poondi is plotted and analysed using Weighted Overlay Analysis technique in Arc GIS and thus the appropriate area of construction of check dam is determined.