Sustainable storm water management - An evaluation of depression storage effect on peak flow

Urban runoff is a complex phenomenon which depends upon many factors like intensity of rainfall, slope of the catchment, shape, land use pattern and many other parameters. Sustainable storm water management requires a clear understanding of typology of various components of flood risks and the factors that mitigate or abate them. The Best management practices should include increase in pervious areas and provision of detention ponds which results in increase in depression storage, The increase in depression storage can also be achieved with rainwater harvesting structures. In present study, the impact of increase in both impervious storage I pervious storage is studied for an urban area in Hyderabad.