A Sustainable Stormwater Management Model of Vallabh Vidyanagar

Abstract

Stormwater drainage system is considered as an important infrastructure for any city or town. Extreme precipitations due to climate change and the narrow peak of hydrograph due to uncontrolled urbanization result in unexpected negative impact of stormwater drainage which creates flood like situation and a lot of public outcry. This study is aimed at finding a sustainable solution to the extreme floods occurring in Vallabh Vidyanagar area of Anand, Gujarat, India. The capacity analysis of existing system is performed to identify overflow location and few LID (Low Impact Development) Techniques were incorporated to mitigate the hydrological effects of urbanization in the city using the popular software SWMM (Stormwater Management Model). Various data collected from Vallabh Vidyanagar Municipality and Bhuvan - Geoportal of NRSC/ISRO are used to prepare the schematic view of the study area in SWMM along with ArcGIS tools. SCS Curve Number Method was used to identify the peak runoff volume of the study area from the year 2015-2019. The results unveiled the overflowed links, runoff volume in the links and by applying the salient LID features of SWMM, runoff volume has decreased by 12ML (million liters) in the study area