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Ice-jam flood delineation: Challenges and research needs

机译：冰河洪水的描述：挑战和研究需求

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摘要

Identifying and understanding flood hazard and risk is the requisite first step in enhancing public safety, emergency response planning and future flood damage reduction. The delineation and mapping of flood hazard, inundation and risk areas is an effective way to communicate these vulnerabilities. Procedures and standards for flood mapping for open-water (ice-free) events have been performed by many jurisdictions and are well established. In Canada, rivers and streams are prone to ice-related flooding, and these flood events often result in higher water levels and more extensive damages than open-water events do. Ice-related flood events are highly variable and difficult to evaluate, especially with respect to likelihood of site-specific re-occurrence and statistical frequency. In addition, field data and other information required for hydrotechnical modelling of ice-related flood hazard and risk are often unavailable, and standards for ice-related floodplain delineation are less developed. Therefore, many jurisdictions have not adopted guidelines and standards for producing flood hazard and risk mapping incorporating ice-related flood events. In this paper, the present status of delineating ice-related flood events and associated challenges are discussed.
机译：识别和理解洪水的危害和风险是加强公共安全，应急计划和未来减少洪水危害的第一步。洪水灾害，淹没和危险区域的勾画和绘制是传达这些漏洞的有效方法。许多管辖区已经执行了针对开阔水域（无冰）事件的洪水制图程序和标准，并且这些规则和标准已经确立。在加拿大，河流和溪流容易发生与冰有关的洪水，与开阔水域相比，这些洪水事件通常会导致更高的水位和更广泛的破坏。与冰有关的洪水事件变化多端且难以评估，特别是在特定地点再次发生的可能性和统计频率方面。另外，对于与冰有关的洪灾危险和风险的水力技术建模所需的现场数据和其他信息通常不可用，与冰有关的洪泛区划定的标准还不够完善。因此，许多管辖区尚未采用有关产生与冰有关的洪水事件的洪水灾害和风险图的准则和标准。在本文中，讨论了划定与冰有关的洪水事件和相关挑战的现状。

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  • 来源
    《Canadian Water Resources Journal》 |2017年第3期|258-268|共11页
  • 作者

    Kovachis N.; Burrell B. C.; Huokuna M.; Beltaos S.; Turcotte B.; Jasek M.;

  • 作者单位

    Alberta Environm & Parks, River Engn & Tech Serv, Edmonton, AB, Canada;

    Amec Foster Wheeler Environm & Infrastruct, Fredericton, NB, Canada;

    Finnish Environm Inst, Water Resources Management Div, Helsinki, Finland;

    Canada Ctr Inland Waters Environm Canada & Climat, Burlington, ON, Canada;

    Univ Laval, Dept Civil & Water Engn, Quebec City, PQ, Canada;

    BC Hydro & Power Author, Operat, Burnaby, BC, Canada;

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