نتایج جستجو برای: soil conservation service scs
تعداد نتایج: 604939 فیلتر نتایج به سال:
Pertambahan jumlah penduduk dan pembangunan yang terus meningkat menjadi permasalahan serius, terutama di wilayah perkotaan pusat perekonomian, pemerintahan, perdagangan perindustrian. Perubahan tata guna lahan akibat dapat menyebabkan sebuah mengalami banjir genangan terjadi pada musim hujan. Sub DAS Cikeruh merupakan bagian dari Citarum hulu. Wilayah dikenal sering musibah banjir. Penelitian ...
The process of precipitation – runoff of each basin, is influenced by hydrologic, geomorphology conditions, geological formation and vegetation. There are different methods in drainage basins. One way to estimate the runoff height is Curve Number (CN) method. That reperesents the hydrological behavior of basin. data were collected for statistics of climate and then topographic map of 1: 25000 a...
Hydrologic models can be categorized as being either Newtonian or Darwinian in nature. The Newtonian approach requires a thorough understanding of the individual physical processes acting in a watershed in order to build a detailed hydrologic model based on the conservation equations. The Darwinian approach seeks to explain the behavior of a hydrologic system as a whole by identifying simple an...
Soil and water conservation measures can impact hydrological cycle, but quantitative analysis of this impact is still difficult in a watershed scale. To assess the effect quantitatively, a three-dimensional finite-difference groundwater flow model (MODFLOW) with a surface runoff model-the Soil Conservation Service (SCS) were calibrated and applied based on the artificial rainfall experiments. T...
The main scope of this research is evaluation of Soil Conservation Service Procedure in derivation of initial abstraction of precipitation in watershed scale. For this purpose Dalaki watershed which is located in south east of Iran was selected then by using hec-hms and GIS models and a number of observed rainfall runoff events some parameters like CN of watershed ,K and X of Muskingam meth...
The SCS-CN developed by the USDA Soil Conservation Service is a widely used technique for estimation of direct runoff from rainfall events. The watershed CN represents the hydrological response of watershed as an indicator of watershed potential runoff generation. The aim of this research is determining the CN from recorded rainfall-runoff events in different seasons and analyzing its relations...
Abstract In this research, a new conceptual model for producing instantaneous unit hydrographs (IUHs) is introduced by linear combination of the Nash model, which assumes that discharge from reservoir function its storage, and called inter-connected (ICLRM), difference storage adjacent downstream reservoir. By employing these assumptions, system first-order differential equations with three deg...
Knowing the maximum flow and its return period is extremely important for safely dimension hydraulic projects flood prediction control also water erosion prediction. Thus, this study aimed to evaluate Capivari river watershed flow, located in south of Santa Catarina, that has a flooding history. The method used was United States Soil Conservation Service (SCS) Triangular Unit Hydrogram (current...
Many watershed models employ the Soil Conservation Service Curve Number (SCS-CN) approach for runoff simulation based on soil and land use information. These implicitly assume that is generated by Hortonian process and; therefore, cannot correctly account effects of topography, variable source area (VSA) and/or moisture distribution in a watershed. This paper presents new distributed CN-VSA met...
Estimation of surface run-off in karst watersheds has not been widely carried out and the estimation method is generally developed for non-karst watersheds. This study aims to analyze accuracy river discharge at outlet Karst Biringere Sub-watershed using modified Soil Conservation Service Curve Number (SCS-CN) analyzed impact land use change on Sub-watershed. Modification SCS-CN estimating dire...
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