Abu Galum Reserve is located in the northeastern part of South Sinai near the Gulf of Aqaba. It has a total area of about 500 km2 and is made up of granite mountains that end abruptly on a narrow coastal plain. The area also includes canyons, flood fans, coastal lagoons, and marshes. The study area suffers from the dangers and problems caused by torrential rains, which affect human activities, as the study area is characterized by drought and lack of water, but the sudden and heavy rainfall causes torrential torrents that leave sabotage and destruction. This paper aims to assess the risk of flash floods by using the engineering hydrological model (HEC-HMS), to calculate the torrent hydrograph curve and estimate the amount of torrential flow and its flow rates, thus calculating the depth of rain for different return periods up to 100 years.
Keywords: Abu Galum, engineering hydrological modeling, HEC-HMS.