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FLOOD MODELING FOR THE 2009 DAMS SECTOR EXERCISE SERIES

机译：2009 DAMS运动系列的洪水建模

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摘要

This paper describes the inundation modeling and mapping efforts that supported the 2009 Dams Sector Exercise Series - Columbia River Basin (DSES-09) sponsored by the U.S. Department of Homeland Security and the U.S. Army Corps of Engineers (USACE). The exercise triggering event is based on a severe rain-on-snow event affecting a large portion of the Columbia River Basin, leading to significant flooding in the Tri-Cities area. The exercise was organized into five tracks. Track 1, Modeling and Mapping, was led by USACE's Northwestern Division and evaluated existing models to estimate hydrological and hydraulic conditions based on weather and dam operations, produced updated inundation maps, and identified additional modeling requirements. The inundation maps were critical to the conduct of the subsequent tracks.rnRealistic estimation of the impact of extreme flooding on critical infrastructure and key resources was crucial to the development of the exercise. The USACE Modeling, Mapping and Consequence Estimation (MMC) Production Center developed a new comprehensive inundation model using the Hydrologic Engineering Center's - River Analysis System (HECRAS). The 300 mile reach of the Columbia River system between USACE's Chief Joseph Dam and McNary Dam was modeled including five non-federal dams owned and operated by county Public Utility Districts (PUD). Accurate modeling of the levee system in the Tri-Cities that is owned and operated by USACE was an area of special emphasis. The channel and floodplain geometry was developed from the best available elevation data and operations of the hydraulic structures were based on information compiled from numerous sources. This paper is an overview of the simulation objectives, the model development process and the challenges of the data synthesis. It includes a discussion of the primary sources of uncertainty in the flood simulation and mapping of inundated areas.
机译：本文介绍了由美国国土安全部和美国陆军工程兵团（USACE）赞助的2009年大坝部门演习系列-哥伦比亚河盆地（DSES-09）的淹没建模和制图工作。引发运动的事件是基于严重的雪雨事件，影响了哥伦比亚河流域的大部分地区，导致三城市地区发生大量洪水。演习分为五个部分。 USACE西北分部牵头开展了第1轨建模与制图，评估了现有模型，以根据天气和大坝运行情况估算水文和水力状况，制作了更新的淹没图，并确定了其他建模要求。淹没图对于后续跟踪的行为至关重要。rn极端洪水对关键基础设施和关键资源的影响的现实估计对于演习的发展至关重要。 USACE建模，制图和结果估计（MMC）生产中心使用水文工程中心的河流分析系统（HECRAS）开发了一种新的综合淹没模型。 USACE的首席约瑟夫·达姆（Joseph Dam）和麦克纳里·达姆（McNary Dam）之间的哥伦比亚河系统300英里的航程被建模，包括由县公共事业区（PUD）拥有和运营的五个非联邦水坝。 USACE拥有和运营的三城市堤防系统的精确建模是一个特别需要强调的领域。河道和洪泛区的几何形状是根据现有的最佳海拔数据开发的，而水工建筑物的运行则基于从众多来源收集的信息。本文概述了仿真目标，模型开发过程以及数据综合面临的挑战。它讨论了洪水模拟和淹没区域绘图中不确定性的主要来源。

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  • 会议地点 Sacramento CA(US)
  • 作者

    Gregg N. Teasdale; rnBarry Moran; rnYazmin Seda-Sanabria; rnJohn W. Hunter;

  • 作者单位

    U.S. Army Corps of Engineers, Walla Walla District, Walla Walla, WA, 99362;

    rnU.S. Army Corps of Engineers, Nashville District, Nashville, TN, 37202;

    rnCritical Infrastructure Protection and Resilience Program, Office of Homeland Security, Directorate of Civil Works, U.S. Army Corps of Engineers, Headquarters, Washington DC, 20314;

    rnEngineering and Construction Division, Directorate of Civil Works, U.S. Army Corps of Engineers, Headquarters, Washington DC, 20314;

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  • 正文语种 eng
  • 中图分类 挡水坝;
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