Flood Susceptibility Mapping on Middle TapiBasin Using ArcGIS
Author(s):
Prathmesh S. Jangle, Dr. R.V. Shetkar
Keywords:
ArcGIS, Flood Susceptibility Mapping, MCDA Method, Saaty’s AHP, Weighted Overlay
Abstract
Floods pose significant risks to human lives, infrastructure, and the environment. To mitigate the risks associated with flooding, accurate identification and mapping of flood hazards are crucial. To overcome this issue, the present study has been conducted around middle Tapi basin with the intention of delineating the flood risk and susceptibility with the use of remote sensing /(GIS) along with the Saaty’s analytical hierarchy process (AHP) method. The digital elevation data and satellite images were taken from the Bhuvan website. The thematic maps were prepared using images. The precipitation data is taken from Indian Metrological Department website. The data collected from various sources was then used and with the help of ArcGIS model is developed. The area is classified in to 5 classes and a weighted overlay analysis is carried out. For the final flood susceptibility evaluation 10 sub-criteria were considered. Saaty’s AHP method has been used to find weights of each of the parameter in which the topography has been assigned more weight for locating areas that are more prone to flooding. The other important parameters are hydrologic properties, land cover dynamics and permeability of the soil strata. The results of the study indicate that approximately 4,584 square kilometers (14.60% of the total area) is identified as very high to high flooding susceptibility zone. These high flooding susceptibility zones were predominantly located along the banks of rivers. It is also observed that an area of 9358.88 sq km (26.82% of total area) has low to very low flooding susceptibility.
Article Details
Unique Paper ID: 160884

Publication Volume & Issue: Volume 10, Issue 1

Page(s): 1425 - 1432
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