首页> 外文期刊>Journal of the American Water Resources Association >'Curve Number Derivation for Watersheds Draining Two Headwater Streams in Lower Coastal Plain South Carolina, USA' by Thomas H. Epps, Daniel R. Hitchcock, Anand D. Jayakaran, Drake R. Loflin, Thomas M. Williams, and Devendra M. Amatya
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'Curve Number Derivation for Watersheds Draining Two Headwater Streams in Lower Coastal Plain South Carolina, USA' by Thomas H. Epps, Daniel R. Hitchcock, Anand D. Jayakaran, Drake R. Loflin, Thomas M. Williams, and Devendra M. Amatya

机译:Thomas H. Epps,Daniel R. Hitchcock,Anand D. Jayakaran,Drake R. Loflin,Thomas M. Williams和Devendra M. Amatya撰写的“美国南卡罗来纳州下游沿海平原排水两河源流域的弯道数推导”

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摘要

Epps etal. (2013) derived Curve Number (CN) values for two forested headwater watersheds in the Lower Coastal Plain of South Carolina during the 2008-2011 period from rainfall-runoff data, resulting in 23 events for the Upper Debidue Creek (UDC) watershed and in 20 events for Watershed 80 (WS80). D'Asaro and Grillone analyzed the P, CN data of the UDC watershed finding an evident complacent behavior, characterized by a declining CN with increasing P but without approaching a stable value at large storms. In this case, the traditional runoff CN equation does not fit well with the rainfall-runoff data that indicate a partial source area watershed behavior and are more aptly modeled by the equation introduced by D'Asaro and Grillone (2012), who introduced a C parameter in the well-known runoff CN formula. The C value, that represents the source area (fraction of drainage area) of the basin that produces runoff with a fixed CN<100, is here considered to vary with the water table elevation (WTE), to which it is well correlated.
机译:Epps等。 (2013年)根据降雨径流数据推导了南卡罗来纳州下游沿海平原两个森林上游水源流域的曲线数(CN)值,这些数据来自降雨径流数据,导致上德比杜河(UDC)流域和内河沿岸的23个事件分水岭80(WS80)的20个事件。 D'Asaro和Grillone分析了UDC流域的P,CN数据,发现了明显的自满行为,其特征是CN随P的增加而下降,但在大风暴中却没有达到稳定值。在这种情况下,传统的径流方程与降雨-径流数据不能很好地吻合,后者表明了部分源区的分水岭行为,并且更恰当地由D'Asaro和Grillone(2012)引入的方程建模。众所周知的径流CN公式中的参数。 C值表示产生固定CN <100的径流的流域的源区(排水面积的分数),在此认为C值随地下水位高程(WTE)的变化而变化,并且与该高度相关。

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