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2. Presentation Plan 1) Statement of problem (Background). 2) Study objective. 3) Study area. 4) Methodology. 5) Results. 6) Conclusion and Recommendation 2

3. Statement of problem ( Background). AL QURAYAH FLOOD 1995: The flood of December 1995 was the worst in the history of the Al Fujairah, and almost 90 percent of the Al Qurayah area was affected. SHARM FLOOD 1997 AND 2009: The first flood was in 1997. At the mid of night the three earth dams above Sharm town collapsed. Water contained in the reservoir surged through the town, inundating whole communities, blanketing, farms, and roads with debris, and disrupting the lives of hundreds. The second flood occurred in 2009. 3

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5. Dibba always have fast flooding, if rain was heavy because of many reasons such as:  Dibba is located between mountains and in front of mouths of wadies.  Being in lower area near to the sea so all the water in watershed flow direct to the city.  Modification and damaging the natural wadies channels due to growth affected too.  Most of the channels are demolished others become narrower which influence the speed of water flow. 5

6. Study objective: This study aims at assessing the risk of flash flooding in Dibba using GIS. It has the following objective: 1) Evaluate the impact of flash floods on urban life. 2) Develop a GIS urban flood hazard Map of Dibba using multicriteria decision analysis. 6

7. Study area: The Study area located on the east coast of United Arab Emirates (UAE). Dibba considered the second largest city in the Emirate of Fujairah with an area of 600 square kilometers. It located in northern part of Emirate of Fujairah. 7

8. METHODOLOGY Site-specific Information Define the Problem Determination of GIS Layers Integration of Available Layers Preparation of layers Determination of classes Computation of Weight Final Flood Hazard Map 8

9. Result: 9

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11. :CONCLUSIONS AND RECOMMENDATIONS The flood hazard map is a new tool for the cities under study, which may assist the planners and decision makers to evaluate that area in need of a revision of discharge infrastructure to reduce the risk and danger. Government authorities should use GIS to monitor environmental disasters and build a detailed database for all types of natural disasters. Using Topographic LiDAR study helps in choosing the best location to fit appropriate defense mechanisms such as building dams and breakers to save the settlement. 11

12. :CONCLUSIONS AND RECOMMENDATIONS Increasing green areas and planting trees at the side of main drainage streams. Local authorities should also create and implement planning and development rules and regulations that prevent degradation of natural wadies channels and reduce the flood risk for settlements. 12

13. Thank you for your attention. 13