Mohammad Farid
Disasters related to water in the plateau and lowlands are a major concern in Indonesia. The disaster has caused many victims and financial losses. Based on data from the Disaster Epidemiology Research Center (CRED), during 1900 - 2014, of 245 main disaster-related disaster in Indonesia, flooding was the most common disaster with 167 events. To reduce the risk of flooding, there needs to be an integrated mitigation plan. The research stages contain review of literature studies, data collection, analysis and modeling, and mapping and danger analysis. Data collection includes river geometry, rainfall data, tidal data, topographic data, and land use data. All data sets are analyzed for modeling input. Simulation of runoff runoff to calculate flood discharge using HEC-HMS version 4.0. The output of this simulation is the hydrograph design used for floodwood simulations using HEC-RAS 5.0. The output of the model is a flood puddle map which includes height and speed. From this research has been studied by the HEC-RAS 5.0 application as a flood simulation modeling tool. For the Musi River case study in Palembang City, the simulation results show good suitability with data observed and can be assessed for flood-prone maps. It is expected that danger maps can be used for risk assessment.
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