Urban Flood Modelling and Management using Storm Water Management Model

Authors

  • S. Sri Harsha, Sunny Agarwal, C Hari Kiran

Abstract

Urban areas are the major hotspots for the origination of floods. Occupying the surfaces with various impervious surface features there is an opportunity of changeover of rainfall to runoff which results in flooding. Variations of atmospheric changes is also a crucial factor for precipitation events in unusual times that outcomes in rising flood peaks. Volume of runoff from the investigation area is assessed by adopting Storm Water Management Model (SWMM). The major purpose of utilizing SWMM is to monitor the quality along with quantity of overflow originating from the sub catchments. This study is to illustrate the flooding situations for the urban area for historical utmost intense precipitation event as well as future intense rainfall situations. Flooding conditions of future is assessed by using RCP 4.5 NOAA-GFDL-ESM2M climate model downscaled data. Infiltration and Flow routing are the two essential aspects of SWMM. Modified Green-Ampt method is used for the infiltration while Dynamic Wave method is chosen for Flow Routing. SWMM outcomes are demonstrated in the form of graphs, tables which helps in understanding the overflow section and nodes.

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Published

2020-05-18

Issue

Section

Articles