Urban Flood Estimation in Bhubaneswar city using Storm Water Management Model (SWMM)

Abstract

Flood risk analysis is often subject to severe uncertainties, which can potentially undermine flood management decisions. Hence analysis of flood frequency and flood inundation models is always a topic of concern. Finding the urban drainage system's ability to convey water requires estimating the peak first and then the volume of urban runoff. Understanding the issues of drainage system and determining the degree of a flood or surcharge can be done by simulating urban floods. The primary aim of this study was to estimate urban flooding in Bhubaneswar city of Odisha using Storm Water Management Model (SWMM) by simulating urban watershed runoff. The land use map and topographic map were used to identify the study's urban drainage system. This study uses DEM obtained from Shuttle Radar Topography Mission (SRTM), Drainage map and LULC map (Landsat 08). The precipitation data was obtained from NASA Power. The main canals of the urban drainage system are predicted to be designed optimally using the runoff results of this study. Additionally, ideal locations for runoff storage will be found, and flood damage will be avoided.