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Impacts of Reservoir Operation in the SWAT ModelCalibration

机译：储层运行在SWAT ModelCalibration中的影响

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The Soil and Water Assessment Tool (SWAT) model has widely been used as an effective tool for assessing water resources. However, an evaluation of the reservoir component has rarely been addressed despite the accuracy of simulated streamflow, which can be reduced by not considering a reservoir in the model. The purpose of this paper is to evaluate the impacts of reservoir outflow estimation methods in calibrating the SWAT model. This study was conducted within the Grenada Lake Reservoir watershed (4,500 km~2) within the Yazoo River Basin. The SWAT model was calibrated and validated using long-term measured streamflow data from the U.S. Geological Survey gage stations (07282000, 07283000, and 07285500) and reservoir outflow data from U.S. Army Corpsof Engineers. Two upper sub-watersheds contributing to inflow of reservoir were first calibrated and validated for streamflow. Comparing with the measured streamflow data, the model performance showed satisfactory during both calibration and validation periods. Based on the calibrated parameters, the impacts of the reservoir outflow estimation methods were evaluated at the watershed outlet (07285500) of the study watershed, which is located below the Grenada reservoir. According to the statistical analysis, the measured outflow options showed satisfactory results for daily stream flow data, whereas the target release options showed unsatisfactory results. However, all four reservoir outflow options showed satisfactory results for monthly streamflow data. These results indicates that the target release approach using non-specific or specific target release approach in the SWAT model can effectively use to simulate the monthly streamflow with the limited information of reservoir. The results from our study can provide the useful information in applying the SWA T model for the watershed including the flood control reservoirs.
机译：土壤和水评估工具（SWAT）模型广泛被用作评估水资源的有效工具。然而，尽管模拟流流的准确性，但是很少解决了储库组分的评估，这可以通过不考虑模型中的储层来减少。本文的目的是评估水库流出估计方法对校准SWAT模型的影响。该研究在Yazoo River盆地的格林纳达湖水库流域（4,500公里〜2）内进行。使用来自美国地质调查量具（07282000，07283000和07285500）的长期测量的流流数据进行校准并验证了SWAT模型，并从美国陆军核心工程师的水库流出数据。首先校准和验证为储层流入的两个上层分流域，并验证为流流。与测量的StreamFlow数据进行比较，在校准和验证期间，模型性能显示令人满意。基于校准参数，在研究流域的流域出口（07285500）中评估了储层流出估计方法的影响，位于格林纳达水库下方。根据统计分析，测量的流出选项显示日常流流量数据的令人满意的结果，而目标释放选项显示出不令人满意的结果。但是，所有四个库外流选项都显示出满意的每月流流程数据结果。这些结果表明，在SWAT模型中使用非特定或特定目标释放方法的目标释放方法可以有效地用于模拟具有储层信息的有限信息的月度流流。我们研究的结果可以提供应用包括防洪水库的流域SWA T模型的有用信息。

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