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The Mayan and Shandiz Hesar Golestan Rivers are important rivers of the Kashafrood. The length of Mayan River and the Shandiz Hesar Golestan River are 30 km, and 7.320 km approximately. Regional Water Company of Khorasan Razavi intended to prepare and implement flood controlling programs to prevent damage caused by flood; therefore, the company proposed the project of riverbed and right of way limit delineation of these rivers. In this study, HEC-RAS software and Geographic Information System data were applied to simulate one-dimensional model of the river to delineate the flood plain zoning of unusual and supercritical flows.
From the results of these studies, limits of the riverbed and right of way in the Mayan and Shandiz rivers were delineated, after that through field visiting, the extent of riverbed and fringes were adjusted.