Flood Susceptibility Accuracy Assessment of Panchganga River Basin (PRB), Kolhapur, Maharashtra (India) using Frequency Ratio and Weight of Evidence Model

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Abstract

In the past few decades, the world has experienced some of devastating and frequent. flood events. The Panchganga River basin (PRB) of Maharashtra state, India had been selected for flood susceptibility mapping using the frequency ratio (FR) model and weight of evidence (WoE) model. In the present study, a flood inventory with 224 historic flood locations was prepared. 75% of flood locations were randomly selected for training and 25% for testing purposes. The flood susceptibility map prepared using FR and WoE model was classified into five zones such as very high, high, moderate, low, and safe zone using ArcGIS software. The receiver operating characteristics (ROC) curves were plotted with an area under the curve (AUC) values of 88.78% and 89.27% for the FR model and 85.84% and 87.34% for the WoE model for success rate and prediction rate respectively. The present study will help people near the Panchganga River to move to a safer place during flooding. The farmers can minimize their losses of different kind due to flood disasters in the PRB.

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Keywords

Flood Susceptibility Mapping (FSM), Digital Elevation Model (DEM), Frequency Ratio (FR), Weight of Evidence (WoE), Remote Sensing (RS)