Developing Flash Floods Inundation Maps Using Remote Sensing Data, a Case Study: Wadi AL-Arish, Sinai, Egypt
Journal Title: American journal of Engineering Research - Year 2017, Vol 6, Issue 5
Abstract
Due to the importance of Sinai as one of the major development axes for the Egyptian government which try to increase/encourage the investment in this region of Egypt, the flood protection arise as a highly important issue due to the damage, danger and other hazards associated to it to human life, properties, and environment. Flash flood, occurred at the last fiveyears in different Egyptian cities, triggered the need of flood risk assessment study for areas highly affected by those floods. Among those areas, AL-Arish city was highly influenced and therefore need a great attention. AL-Arish city has been attacked by many floods at the last five years; these floods triggered the need of the evaluation flood risk, and an early warning system for the areas highly affected by those floods. The study aims to help in establishing a decision support system for the study area by determining the flood extent of wadiAL-Arish, so the damages and losses can be avoided, to reduce flood impact on the developed areas in and around wadi AL-Arish and to improve the flood management in this area in the future. To estimate the runoff, which will be further used for developing the inundation maps, hydrologic model had been developed to investigate the response of watershed to rainfall events. Through the hydrologic modeling some parameters had been considered like soil type and cover, land use which will change water behavior. A historical event data was used during analysis and the response of the study area was modeled to define the flood inundation extents. A flood inundation maps for wadi AL-Arish for the historical event had been developed. The hydraulic model results was translated to flood inundation maps showing water depth and velocity along the wadi with a maximum values of 3 meters, 4.49m/s. The stream power was calculated and
Authors and Affiliations
Mahmoud S. Farahat1 ,, A. M. Elmoustafa2 ,, A. A. Hasan3
Keywords
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