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首页> 外文期刊>Journal of the American Water Resources Association >ESTIMATING STREAMFLOW AND ASSOCIATED HYDRAULIC GEOMETRY, THE MID-ATLANTIC REGION, USA
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ESTIMATING STREAMFLOW AND ASSOCIATED HYDRAULIC GEOMETRY, THE MID-ATLANTIC REGION, USA

机译：美国中大西洋地区的估计流量和相关的液压几何

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摘要

Methods to estimate streamflow and channel hydraulic geometry were developed for ungaged streams in the Mid-Atlantic Region. Observed mean annual streamflow and associated hydraulic geometry data from 75 gaging stations in the Appalachian Plateau, the Ridge and Valley, and the Piedmont Physiographic Provinces of the Mid-Atlantic Region were used to develop a set of power functions that relate streamflow to drainage area and hydraulic geometry to streamflow. For all three physiographic provinces, drainage area explained 95 to 98 percent of the variance in mean annual streamflow. Relationships between mean annual streamflow and water surface width and mean flow depth had coefficients of determination that ranged from R~2 = 0.55 to R~2 = 0.91, but the coefficient of determination between mean flow velocity and mean annual streamflow was lower (R~2 = 0.44 to R~2 = 0.54). The advantages of using the regional regression models to estimate streamflow over a conceptual model or a water balance model are its ease of application and reduced input data needs. The prediction of the regression equations were tested with data collected as part of the U.S. Environmental Protection Agency (USEPA) Environmental Monitoring and Assessment Program (EMAP). In addition, equations to transfer streamflow from gaged to ungaged streams are presented.
机译：开发了估算大西洋中部地区未切屑流的流量和水道水力几何形状的方法。来自阿巴拉契亚高原，山脊和山谷以及中大西洋地区皮埃蒙特自然地理学省的75个测量站的观测的年平均流量和相关的水力几何数据被用于开发一套将流量与流域和水流联系起来的幂函数。水力的几何形状以产生水流。对于所有三个自然地理省，流域解释了年均流量的95％至98％。年平均流量与水面宽度和平均流量深度之间的关系具有R〜2 = 0.55至R〜2 = 0.91的确定系数，但平均流速和年平均流量之间的确定系数较低（R〜 2 = 0.44至R〜2 = 0.54）。与概念模型或水平衡模型相比，使用区域回归模型来估计流量的优势在于其易于应用且减少了输入数据需求。使用作为美国环境保护署（USEPA）环境监测与评估计划（EMAP）的一部分收集的数据对回归方程的预测进行了测试。此外，提出了将流量从量规流转移到非量规流的方程式。

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