Generation of Thematic Layers for Flood Hazard Zonation Along the Banks of Koyna River Near Patan

Abstract

AbstractFloods are the most frequent and devastating natural hazards. Floods tend to cause large-scale loss of human life and extensive damage to property. Flood hazard mapping is a critical component of effective land use planning in flood-prone areas. This allows the development of charts and maps that help recognize areas of risk and offer priority to mitigation and response efforts. The objective of this study is to generate a flood hazard zonation map for part of Koyna River along Patan town, Dist. Satara, Maharashtra, India. High-resolution remote sensing images from Google Earth imagery and IRS–1D satellites are combined with hydraulic analysis of ASTER DEM to derive layers in ILWIS software developed by ITC, Netherlands. These layers were used to identify the flood-susceptible area of the study area. The flood hazard map developed can be further used for vulnerability and mitigation studies.KeywordsGeographic information system GISAster DEMGoogle Earth imageryILWISFlood hazard mapping