FLASH FLOOD RISK IN WEST- CENTRAL SINAI, EGYPT

Orabi, Orabi

doi:10.21608/egjg.2021.101672.1008

FLASH FLOOD RISK IN WEST- CENTRAL SINAI, EGYPT

Document Type : Original Article

Author

orabi orabi

1 gamal abd el nasser st.

10.21608/egjg.2021.101672.1008

Abstract

Four drainage basins of the different watershed areas of west-central Sinai were selected to study the flash flood hazards. Using the recent topographic maps, the drainage basins, the hydrologic, topographic and morpho-tectonic parameters were generated from the elevation thematic layer namely; the digital elevation model (DEM) was accurately determined and analyzed. The applied methodology revealed that the hydrologic and morphometric parameters play major roles in flash flood contributing factors. The low slopes areas are associated with low runoff connected and high sediment accumulation.
Integration of hydrologic indices, sediment transport, and topographic wetness indices with morpho-tectonic parameters to produce sedimentation associated with flash floods are the main objectives.
This work illustrated the remote sensing data are efficient tools in flood evaluation and management, supporting the urban planner for future development.
In west-central Sinai basin, the groundwater is available from different water-bearing formations under different hydrogeologic conditions. These distinctive conditions reflect pronounced differences in local morphologic, topographic, lithologic and structural features. These features control the groundwater occurrence, movement and quality.
An arid climate and lacking adequate flood management systems are the main caustic flash flood events in semi-arid and arid region. This work is subjected to several flooded events during the past decades.

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