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Zoning of Flood Caused by Farrokhi Dam Breaking Of Qaen South Khorasan, Iran Original Article, D83 Rezaei M., Rezvani Mahmuee A., Khaksefidi S. J. Civil Eng. Urban. 4(5): 550-553. 2014 ABSTRACT: Due to the very high losses caused by breakage of dams, especially with regard to the dams that are constructed in the upstream of population centers, dam breakage of studies, including estimating fracture parameters, routing, and flood zoning caused by dam breaking for safety management at downstream dams, seem to be necessary. This is possible with the use of hydraulic models and GIS. In this study, using a dam breaking analysis for Farrokhi dam of Qaen located in South Khorasan, and use computer models HEC-RAS, GIS and Breach, flood zoning of the case is investigated. According to the results of failure analysis, flood routing, is performed downstream of dam above, and the result is entered in GIS, and flood zone is provided. Based on the results from rural areas of Farrokhi and Mahdiabad, downstream of the dam is exposed to the risk of dam break flood. Furthermore, it is suggested, using a risk matrix, areas at risk from flooding, to determine, by combining maps, speed, and depth of flooding, and determine the amount of risk in each area of high risk areas. Forecasting losses reduction system such as flood warning systems, anti-flood out buildings, editing recipes measures in emergencies, dams, public procurement procedures, to deal with emergencies, and perform periodic maneuvers to necessary to maintain readiness for dealing with crisis situations, the separation of risk areas is essential. Keywords: Dam Break, Flood Zoning, Farrokhi, HEC-RAS منبع: [Hidden Content] دانلود: [Hidden Content].,%204%20(5)%20550-553,%202014.pdf J. Civil Eng. Urban., 4 (5) 550-553, 2014.pdf