Flood Analysis of Wainganga River by using HEC-RAS Model

Bhandara city lies on the bank of Wainganga River which is flood prone area. The floods of Wainganga River affects the normal life in the city very frequently. In the present study, USACE Hydrologic Engineering Center's River Analysis System (HEC-RAS 5.0.3) Model is used for the analysis of the flood. The water surface elevation are computed for various flood discharges and return period (25 years, 50 years and 100 years). Total 19 cross sections along the river near the city are considered for the steady and unsteady flow simulations. The flow hydrograph which is generated from previous available data is used for unsteady flow simulation. The output from a HEC-RAS model shows that at cross section 2,3 for steady flow conditions and cross section 19 for unsteady flow conditions are critical and subjected to the flooding of the adjoining area disturbing the normal life, for reducing the losses the protective measures needs to be undertaken.