Use of IMERG Satellite Products and Distributed Modeling to Simulate Urban Flooding in Fujairah, UAE

Authors: Khameis Alabdouli*, Assistant Professor Department of Geography and Urban Planning, CHSS, United Arab Emirates University, Khalid Hussein Hussein, Assistant Professor Department of Geography and Urban Planning , United Arab Emirates University , Hatim Sharif, Professor, The University of Texas San Antonio , Dawit Ghebreyesus, Graduate Research Assistant, The University of Texas San Antonio
Topics: Hazards, Risks, and Disasters, Geographic Information Science and Systems, Urban and Regional Planning
Keywords: Flood Model,GIS, Mitigation, Urbanization
Session Type: Poster
Day: 4/5/2019
Start / End Time: 3:05 PM / 4:45 PM
Room: Lincoln 2, Marriott, Exhibition Level
Presentation File: No File Uploaded

This study aims to build a flood simulation model for the main catchment of Fujairah in the northeastern region of the United Arab Emirates (UAE). The UAE has an arid climate with an average annual rainfall of less than 100 mm. However, occasional extreme rainfall cause flash floods in the mountainous eastern region, especially the urban portions including Fujairah. The Integrated Multi-satellite Retrievals for Global Precipitation Measurement Mission (IMERG) rainfall product was used due to lack of detailed ground observations. The catchment was divided into smaller sub-catchments to arrive at a resolution that defines the main catchment features. The March 2016 flood was simulated using a hydrologic model, a hydraulic model, and pre- and post-processing tools. A geographic information system (GIS) based modelling interface was used to pre-process the terrain and rainfall data and generate input files for hydrologic and hydraulic models. The uncalibrated satellite products underestimated the event rainfall resulting in amplified underestimation of predicted runoff. Calibrated products provided a better estimate of the flooding event. Additional model simulations were performed to understand the roles of urbanization in the flooding, which will assist in the planning of future development, as demonstrated by running the model simulation under different urbanization scenarios. The simulations provided insights into the best options for flood mitigation efforts. The results of this study can be utilized in the design of flood control project and also be used for traffic safety purposes to improve road protection against floods and apply road closures

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