Flood warning system established by the integrated management of hydrological and hydraulic modeling
Subject Areas : forestوحید Yazdani 1 , احسان Behjati 2 , عاطفه Arfa 3
1 - Ph.D in Water Engineering, Research assistant the Kavosh Pey Mashhad Soil and Water Research Institute explored, Mashhad, Iran
2 - کارشناس ارشد سازههای آبی، دانشگاه آزاد اسلامی واحد فردوس، فردوس، ایران
3 - - Masters student Hydraulic Structures, Ferdowsi University of Mashhad, Mashhad, Iran
Keywords: coefficient of fertile flood, the model rainfall - runoff, pre-alarm, Garmi Chay dam,
Abstract :
Abstract Study more about the different points of view Hydrometolojy flood drainage systems and catchment model analysis of rainfall, runoff and flood designated area according to hydrological and hydraulic retention basins, not only financially, but also the legal and the pre warning system to predict and help the decoder is represents the flooding. The purpose of this study is to provide an appropriate mechanism to establish flood warning system hydrological model HEC-HMS and HEC-RAS hydraulic model for the catchment dam is Garmi Chay. After restructuring the data in hydrological studies, flood frequency analysis, maximum a day at selected stations has been distributed to all stations, the three-parameter normal distribution. Applying the ratio of the maximum instantaneous flood peak flood one day, maximum instantaneous flood levels with return periods Garmi Chay River at the dam site Garmi Chay was calculated. The model calculations show that the contribution of the sub-basin outlet flood peak flows sub watershed is not necessarily proportional to the sub basin with high peak flows are not necessarily more effective flood basin outlet. Based on the results pre alerts dam hot tea in Group C (no more than 3 to 6 hours) floor was packed.
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