![]() ![]() SOBRE O HEC-RAS Basicamente, possui uma interface primária por onde pode-se acessar várias outras interfaces para entrada, consulta e verificação de dados. Figura 02 Definição do sistema de unidades adotado. Generally, this study discovered that flooded areas in the upstream and middle parts of Fetam River are high as related to the downstream parts. Rubens Campos 5 Figura 01 Exemplos a serem instalados. These flooded areas along the side of the Fetam River are 27.31, 24.85, 20.47, 17.34, and 13.78 km 2 for 100, 50, 25, 10, and 5 years return periods, respectively. The inundated areas were particularly high from Abaya Kalo, Achigi, and Denbun kebeles for all return periods. Built-up areas and agricultural fields are located along the river banks and are highly susceptible to flooding. These critical floods were damaging the areas around Fetam River, which is hazardous to social and economic growth due to loss of lives and destruction of properties. The flooded areas on Fetam River have been represented depending on 5% incidence peak flows for different reoccurrence eras using the HEC-RAS model, GIS for spatial data handling, and HEC-GeoRAS for interfacing among HEC-RAS and GIS. Using the past data on river banks and the release of earlier floods besides topographic data, maps were made to illustrate areas predictable to be covered with the flood for different releases. ![]() Flood inundation mapping is used to define the zones which are more susceptible to flood along the river when the release of a stream surpasses the bank-full stage along the river. Therefore, this study was conducted to map flood inundation areas along the Fetam River using GIS and HEC_RAS. One of these measures is inundating flood hazard areas. This can be minimized by giving attention to flood risk measures. ![]() Flood occurs due to rapid population growth, land degradation, and climate change, and causes harmful damages to human beings and properties. ![]()
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