ABSTRACT This study experiments with reservoir representation schemes to improve the ability to model active water management in the National Water Model (NWM). For this purpose, we developed an integrated water management model, NWM-ResSim, by coupling the NWM with HEC-ResSim, and two reservoir representation schemes are tested: simulation of reservoir operations and retrieval of scheduled operations. The experiments focus on a pilot reservoir domain in the Russian River basin – Lake Mendocino, California – and its contributing watershed. The evaluation results suggest that the NWM-ResSim improves the simulation performance of reservoir outflow from this managed reservoir over the NWM default level pool routing scheme. The degree of this improvement depends on the suitability of the operation guidance; the reservoir operations simulation scheme could have acceptable errors for the purposes of water resources management, but not for flood operations. Results of the retrieval scheme of scheduled operations demonstrated better performance for sub-daily flood operations.

中文翻译：

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改进水文预测的水库表征方案实验：将国家水模型与 HEC-ResSim 耦合

摘要 本研究使用水库表示方案进行实验，以提高在国家水模型 (NWM) 中模拟主动水管理的能力。为此，我们通过将 NWM 与 HEC-ResSim 耦合，开发了一个集成的水管理模型 NWM-ResSim，并测试了两种水库表示方案：水库操作模拟和预定操作的检索。实验的重点是俄罗斯河流域的一个试点水库域——加利福尼亚门多西诺湖——及其贡献的流域。评估结果表明，NWM-ResSim 比 NWM 默认水平池路由方案提高了该管理水库的水库流出模拟性能。这种改进的程度取决于操作指南的适用性；出于水资源管理的目的，水库操作模拟方案可能存在可接受的误差，但对于洪水操作则不然。预定操作检索方案的结果表明，次日洪水操作具有更好的性能。