نتایج جستجو برای: Arc-CN Runoff
تعداد نتایج: 63380 فیلتر نتایج به سال:
In Iran, there is a general risk of runoff and flood, and since this country has a dry to semi-arid climate, its predominant rainfall is not evenly distributed in terms of time and place. Routine runoff at the earth's surface can lead to risks such as groundwater abatement, social issues such as population migration, erosion and loss of soil fertility, sedimentation in reservoirs and water q...
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...
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...
The Soil Conservation Service Curve Number (SCS-CN) approach is widely used as a simple method for predicting direct runoff volume for a given rainfall event. The CN parameter values corresponding to various soil, land cover, and land management conditions can be selected from tables, but it is preferable to estimate the CN value from measured rainfall-runoff data if available. However, previou...
The rainfall and runoff relationship becomes an intriguing issue as urbanization continues to evolve worldwide. In this paper, we developed a simulation model based on the soil conservation service curve number (SCS-CN) method to analyze the rainfall-runoff relationship in Guangzhou, a rapid growing metropolitan area in southern China. The SCS-CN method was initially developed by the Natural Re...
The rainfall and runoff relationship becomes an intriguing issue as urbanization continues to evolve worldwide. In this paper, we developed a simulation model based on the soil conservation service curve number (SCS-CN) method to analyze the rainfall-runoff relationship in Guangzhou, a rapid growing metropolitan area in southern China. The SCS-CN method was initially developed by the Natural Re...
By using remote sensing data, Geographic Information Systems (GIS) provide convenience in determining basin morphology and watershed planning studies. For this aim, the applicability of Arc-GIS software Afrin Bridge Basin by processing Digital Elevation Model (DEM) data hydrological analysis tools parameters (i.e. boundary, variation elevation, drainage area, flow network, slope) were investiga...
[1] Motivated by the recent increasing availability of global remote sensing data for estimating precipitation and describing land surface characteristics, this note reports an approximate assessment of quasi-global runoff computed by incorporating satellite rainfall data and other remote sensing products in a relatively simple rainfall-runoff simulation approach: the Natural Resources Conserva...
In the Northeast US, saturation excess is the most dominant runoff process and locations of runoff source areas, typically called variable source areas (VSAs), are determined by the available soil water storage and the landscape topographic position. To predict runoff generated from VSAs some water quality models use the Soil Conservation Service Curve Number equation (SCS-CN), which assumes a ...
ﺗﺨﻤﻴﻦ توان ارﺗﻔﺎع رواﻧﺎب ﻧﻘﺶ ﻣﻬﻤﻲ در ﻣﺪﻳﺮﻳﺖ و پیشبینی سیلخیزی هر ﻣﻨﻄﻘﻪ دارد. سازمان حفاظت خاک آمریکا روشی اراﺋﻪ داده اﺳﺖ ﻛﻪ ﺑﺮای حوزههای بیآﻣﺎر ﺑﺴﻴﺎر ﻣﻨﺎﺳﺐ است. روشهای مرسوم اندازهگیری رواناب بسیار پرهزینه و وقتگیر و مشکل است. این پژوهش ﺑﺎ ﻫﺪف ﻣﺤﺎﺳﺒﻪی توان سیلخیزی و ﺗﺮﺳﯿﻢ ﻧﻘﺸﻪی ﺷﻤﺎرهی ﻣﻨﺤﻨﯽ حوزهی آبخیز نازلوچای با روش سازمان حفاظت خاک آمریکا اﻧﺠﺎم ﺷﺪ. ﻧﻘﺸﻪی ﻛﺎرﺑﺮی زمینهای ﻣﻨﻄﻘﻪ ﺑ...
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