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Showing 2 results for Scs

Dr Ali Ahmadabadi, Dr Amir Karam, M.a Student Mohsen Pourbashir Hir,
Volume 3, Issue 5 (4-2015)
Abstract

Map of runoff potential, have various applications in the Hydrogeomorphology, including identifying potential of flooding, erosion and sediment yield a conditions. Often sub-basins as a study unit is used for this purpose. but The sub-basins have not homogeneity conditions in the vegetation and topography to calculate the producing of runoff. In this study, a new approach, hydrologic response units (HRU) was introduced as a unit of work, and Gare-Soo basin and also feature identification and extraction of the runoff is calculated separately for each unit. and the ability to produce runoff using the Soil Conservation Service (SCS) has been done. The results of study, sixteen of hydrologic response to Gare-Soo basin shows that each unit has the same geomorphology, topography and vegetation. The eight hydrologic response units due to the high potential of producing runoff, with most processes water excavation and scour phenomenon was detected that the type of land use has a significant role. It seems that using of the hydrological response unit, as a unit of work is more effective in accurate identification in the basin runoff ability and erosion conditions.
Abolghasem Goorabi, Nafise Ashtari,
Volume 3, Issue 5 (4-2015)
Abstract

Flooding is a natural hazard and a devastating catastrophe for human society. This hazard is occurring frequently in human communities in the recent years due to improper development of human settlement in watersheds and expansion of impermeable surfaces in drainage areas. Thus, it is essential to determine flood prone areas and make a plan for precautious measures. Moreover, preparation of hydrographs and the assessment of hydrological parameters at the level of basin drainage can give us an accurate evaluation of the flood prone areas in basins. Amame Drainage Basin as one of the sub-basins of Jajrud is proper for evaluation of Watershed Modeling System (WMS), due to the available hydrologic data. This research has made a zonation of the areas susceptible to flooding on this watershed to identify risk parts in surrounding villages using hydrological models in WMS. To do this, we have used WMS-HEC-1 (Hydrologic Engineering Center) Model for SCS (Soil Conservation Service ) unit hydrograph by one flood event. For the zonation by WMS-HEC-RAS4.1 (Hydrologic Engineering Center-River Analysis System) in WMS9.1, up to 29 cross-sections have been utilized along the river centerline. The results have indicated that the highest amount of inundation by a possible flooding is in rural areas in the vicinity of the river, near Amame Village.



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ژئوموروفولوژی کاربردی ایران Applied Geomorphology of Iran
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