Title

Modeling Urban Flash Floods: A Case Study for the City of Panchkula, Haryana, India

Publication Date

12-2010

Committee Chair

Douglas M. Flewelling, Ph.D.

Committee Members

Mark P. Kumler, Ph.D.

Abstract

Urban flooding is an inevitable problem for many cities around the world. Urbanization increases the severity and frequency of floods and may expose communities to increasing flood hazards. GIS provides a scientific foundation for flood planning and management in urban areas. The project execution was based on hydrologic analysis within GIS. A combination of hydrologic and tabular models to estimate rainfall runoff based on Technical Release-55 (TR-55) were developed. TR-55 presents simplified procedures for estimating runoff and peak discharges in small urban watersheds. The study was conducted using an automated floodplain delineation method. The spatial delineation of the flood inundation depths and average zonal inundation depths across the study area at a given local rainfall were calculated. The modeling results were presented in the form of flood inundation maps produced in the GIS to visualize the flood extent and depths. Updated data was a limitation as maps based on current data may not be accurate a decade from now. Floodplain managers require current data to update flood frequency analyses and flood maps in areas with recent urbanization.

Full text is available at the University of Redlands

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