Assessment of the current status of Dumayr Dam and its appurtenances in light of the 2018 flood

Abstract

Flood is considered one of the most important dangers threatening the world, as it causes massive losses and damage to lives and property, and the

Middle East and North Africa region is one of the regions most vulnerable to floods and natural disasters, according to the World Bank’s report on natural disasters.

In October 2018, Dumayr Dam and its surrounding areas were subjected to flooding incidents that affected many residents’ properties and caused damage to them. A hydraulic model was used to perform a flood simulation using Hec-Ras river analysis system software and Geographic Information Systems software Gis, in order to Exceptional flood waves pass through Dumayr Dam, and the inundation maps for the area located from Dumayr Dam to Adra industrial zone area were determined for different recurrence periods (100-500-1000) years, and the results concluded that the inundation areas for recurrence periods are respectively (54.4, 58.2, 67) square kilometers,and The results also found that the water will reach Adra Industrial City and submerge it to an average height of (1-2.5) metres, which may lead to loss of life and property.