Estimation of the Volume Runoff of the Valley of Al-Qasr Basin in Al- Sharqat District
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Abstract
The research relied on the (CN-SCS) method, which is one of the important methods used to estimate the water harvest, which was developed by the Soil Conservation Department of the United States Department of Agriculture (Soil Conservation Service) in 1970 AD, and its famous formula was developed in 1986 AD. The (SCS) method is a set of mathematical equations whose input depends on providing information about land covers and patterns of use, soil hydrology, type of vegetation cover, and amounts of rain falling to know the characteristics of flow and the possibility of water harvesting in the Sukran valley basin, through knowledge and analysis of the description of land cover and knowledge types of hydrological soils in the region and determining the pre-condition of soil moisture. After completing these three elements, the values of CN were obtained, which express the extent of soil permeability, the coefficient (S), which expresses the maximum potential for soil water retention, the coefficient (LA) which indicates the amount of lost rainwater before the onset of surface runoff and the coefficients (Q).) and (QV) which express the depth and quantity of runoff volume in the area.
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