Mapping Flood Hazards by Multi-Criteria Decision Analysis Techniquein Geographic Information System (Gis-McDa)

Abstract

In terms of the importance of constructing new mega-urban zones to achieve future sustainable urban development for Egypt's Vision 2030, this research was initiated with the objective of protecting such zones by mapping flood hazards by "Multi-Criteria Decision Analysis" based on "Geographic Information System" (GIS-MCDA), where the Hegaza Village -Qena Governorate in Upper Egypt was taken as a study area. Accordingly, a research methodology was planned to encompass five investigations (Theoretical, field, numerical, analytical and inferential investigations). The hydrology of the study area was modeled by blending GIS Model-Builder and the hydrological model (HEC-1). A flood hazard map (F.H.M) was produced based on (GIS-MCDA), in terms of the Analytic Hierarchy Process (AHP). The research flagged out that the obtained results would most probably assist decisionmakers. In addition, the research highlighted the importance of implementing flood hazards management activities to ensure the environmental rehabilitation of watersheds to avoid flood disasters.

Assessing Flood Risks in Arid Zones by Linking Remote Sensing Techniques and Gis

“… The Study Area is located between the latitudes 29°40'0.00" N and 29°50'0.00"N, whereas it is located between the longitudes 32°45'0.00"E and 33° 0'0.00" E.  The study area is 609.81 km 2 .  The study area is located in Northeast Suez Gulf.…”

“…30 m resolution) was obtained from the Earth Explorer Website of the USGS, where streams were displayed per 200 m2. This is considered to be accurate; in terms of the available DEM; Figure (2).…”

“…This is achieved within the framework of achieving the goals of Egypt's Vision 2030. For example, flood risk assessment was done by integrating hydrological modeling and hydrodynamic modeling [2], likewise, in floodplain management, where the Watir-Sinai Valley was taken as a case study [3]. Similarly, integrated planning and flood risk management has been done, establishing a conceptual framework for integrated infrastructure [22].…”