A Numerical Framework for Evaluating Flood Inundation Hazard under Different Dam Operation ScenariosA Case Study in Naugatuck River
A Numerical Framework for Evaluating Flood Inundation Hazard under Different Dam Operation ScenariosA Case Study in Naugatuck River
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DOI：
10.3390/w10121798
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发表时间：
2018-12-01
期刊：
影响因子：
3.4
通讯作者：
Anagnostou, Emmanouil
中科院分区：
文献类型：
--
作者：
Hardesty, Sage;Shen, Xinyi;Anagnostou, Emmanouil
在世界范围内，许多河流洪泛平原包含着易受极端水文事件影响的关键基础设施。这些结构是基于洪水频率分析设计的，旨在量化极端事件的震级和复发。本研究的重点是基于综合框架估算未测量地点的洪水脆弱性，该框架由长期（37年）再分析气象数据驱动的分布式降雨-径流模型和高分辨率机载激光雷达导出的地形高程数据驱动的水力模型组成。该框架应用于位于康涅狄格州诺格塔克河流域的关键电力基础设施。利用水文模型再分析得到50年、100年、200年和500年的汛期洪峰，并以此驱动水文工程中心河流分析系统（HEC-RAS）的水力模拟，估算上游水库不同运行策略下基础设施位置的淹没风险。本研究说明了该框架在未测量位置创建洪水地图的潜力，并展示了不同的水管理方案对下游基础设施洪水风险的影响。
Worldwide, many river floodplains contain critical infrastructure that is vulnerable to extreme hydrologic events. These structures are designed based on flood frequency analysis aimed at quantifying the magnitude and recurrence of the extreme events. This research topic focuses on estimating flood vulnerability at ungauged locations based on an integrative framework consisting of a distributed rainfall-runoff model forced with long-term (37 years) reanalysis meteorological data and a hydraulic model driven by high-resolution airborne LiDAR-derived terrain elevation data. The framework is applied to a critical power infrastructure located within Connecticut's Naugatuck River Basin. The hydrologic model reanalysis is used to derive 50-, 100-, 200-, and 500-year return period flood peaks, which are then used to drive Hydrologic Engineering Center's River Analysis System (HEC-RAS) hydraulic simulations to estimate the inundation risk at the infrastructure location under different operation strategies of an upstream reservoir. This study illustrates the framework's potential for creating flood maps at ungauged locations and demonstrates the effects of different water management scenarios on the flood risk of the downstream infrastructure.