TORRENTIAL FLOOD HAZARDS ASSESSMENT, MANAGEMENT, AND MITIGATION, IN WADI ADAY, MUSCAT AREA, SULTANATE OF OMAN, A GIS & RS APPROACH

Flash flood hazard of Wadi Aday threaten human activities in an important urban
area of Muscat City, the capital of Sultanate of Oman. To evaluate and mitigate
these floods; Remote Sensing (IKONOS Images), Topographic and Cadastral
maps, data of rainfall, floods and other data sources have been used under a GIS
environment and manipulated. The study determined the areas under the flood
risk, and clarified the risk class and degree for each of human activities object in
the lower part of Wadi Aday. In order to mitigate the flood hazards, and to utilize
the floods water in such extreme hot desert; the study suggested: establishing two
dams and artificial channel added to some methods that reduce the erosion on
canyon reach road.