Integrated Flood Risk Mapping and Landuse/ Land cover at Local Scale by Using GIS in Dhulapally Region

摘要

This paper revealed that the flood risk mapping and zoning of Dulapally region, Medchal-Malkajgiri district, Telangana. Flood risk mapping is more important for understanding the damage of man-made constructions, QGIS software provides clear information about flood zoning in the study area. In dhulapally region human activity plays a major role for damaging of 110 houses due to improper town planning and dumping of garbage in water flow channel. For understanding flood analysis, study area has divided 4 major zones such as low risk, moderate risk, high risk zones, very high risk zones. The rainfall (758 mm) in very high risk and high risk zones are totally occupied with water so these areas are not preferred for construction. But Pukkat Nagar has constructed in high risk zones for that the total area destroyed due to heavy rains. If rainfall occurs more than 800 mm, moderate risk zones get covered with water, so it is not preferred for construction. We concluded that low risk zone area is more suitable for the living condition, before construction of any building engineers should consider the landuse and land cover plant of atleast last ten years data otherwise the environment impact is heavy.