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首页> 外文期刊>Journal of the American Water Resources Association >Modeling Water Quantity and Sulfate Concentrations in the Devils Lake Watershed Using Coupled SWAT and CE-QUAL-W2
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Modeling Water Quantity and Sulfate Concentrations in the Devils Lake Watershed Using Coupled SWAT and CE-QUAL-W2

机译：利用SWAT和CE-QUAL-W2耦合对恶魔湖流域的水量和硫酸盐浓度进行建模

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Devils Lake is an endorheic lake in the Red River of the North basin in northeastern North Dakota. During the last two decades, the lake water level has risen by nearly 10m, causing floods that have cost more than 1 billion USD in mitigation measures. Another increase of approximately 1.5m in the lake water level would cause spillage into the Sheyenne River. To alleviate this potentially catastrophic spillage, two artificial outlets were constructed. However, the artificial drainage of water into the Sheyenne River raises water quality concerns because the Devils Lake water contains significantly higher concentrations of dissolved solids, particularly sulfate. In this study, the Soil and Water Assessment Tool (SWAT) was coupled with the CE-QUAL-W2 model to simulate both water balance and sulfate concentrations in the lake. The SWAT model performed well in simulating daily flow in tributaries with E-NS>0.5 and |PBIAS|<25%, and reproduced the lake water level with a root mean square error of 0.35m for the study period from 1995 to 2014. The water temperature and sulfate concentrations simulated by CE-QUAL-W2 for the lake are in general agreement with the field observations. The model results show that the operation of the two outlets since August 2005 has lowered the lake level by 0.70m. Furthermore, the models show pumping water from the two outlets raises sulfate concentrations in the Sheyenne River from similar to 100 to >500mg/L. Editor's note: This paper is part of the featured series on SWAT Applications for Emerging Hydrologic and Water Quality Challenges. See the February 2017 issue for the introduction and background to the series.
机译：恶魔湖是北达科他州东北部北部流域红河中的内生湖。在过去的二十年中，湖泊水位上升了近1000万，造成的洪灾减灾措施成本超过10亿美元。湖泊水位再增加约1.5m，将导致泄漏到Sheyenne河。为了减轻这种潜在的灾难性泄漏，建造了两个人工出口。但是，将水人工排入Sheyenne河引起了水质问题，因为魔鬼湖的水中溶解的固体特别是硫酸盐的浓度明显较高。在这项研究中，土壤和水评估工具（SWAT）与CE-QUAL-W2模型结合使用，可以模拟湖泊中的水平衡和硫酸盐浓度。 SWAT模型在模拟E-NS> 0.5和| PBIAS | <25％的支流中的日流量方面表现良好，并再现了1995年至2014年研究期间的湖水水位，均方根误差为0.35m。 CE-QUAL-W2模拟的湖泊水温和硫酸盐浓度与现场观测结果基本一致。模型结果表明，自2005年8月以来，这两个出口的运营使湖泊水位降低了0.70m。此外，模型显示，从两个出口抽水使谢延河中的硫酸盐浓度从相似的100升至> 500 mg / L。编者注：本文是针对新兴水文和水质挑战的SWAT应用程序精选系列的一部分。有关该系列的简介和背景信息，请参见2017年2月号。

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