Approaches for the estimation of daily discharges at watercourse crossings of linear infrastructure

洪水事件可能会对线性工程基础设施造成重大损害，例如道路、铁路或管道，这些基础设施位于基础设施与水道（河流）的交叉点。因此，重要的是 ** 量化与这些洪水事件相关的实际风险，以建立昂贵的基础设施。这就需要 ** 在有关地点提供流量数据。由于这些线性基础设施可以跨越 ** 数千公里，因此不可能在所有交叉点都设置水文站。因此，水文学家经常需要在未测量的交叉口产生洪水分位数估计。拟议的ENGAGE研究项目的主要目标 ** 是开发估算线性基础设施的无测量水道交叉口每日流量的方法。将制定一些方法，并 ** 根据BGC在北美可能遇到的各种条件（山区地形、** 有冰影响的北欧地区等）进行调整。主要原则是有效地将在 ** 个测量位置记录的流量传输到感兴趣的未测量位置。将制定适当的程序，以 ** 划定代表与目标地点类似条件的多组测量站。然后，将使用适当的 ** 估计技术来进行信息传递。一旦在目标地点 ** 生成合成历史序列，就可以执行适当的洪水频率分析程序，以 ** 估计与不同重现期对应的洪水分位数。所开发的方法也可以用于 ** 在实时的基础上，以估计瞬时流量在目标位置的利益。所制定的方法 ** 将被组合成一个工具，便于在北美任何地方使用。该工具 ** 最终可以集成到我们的合作伙伴 **BGC开发的基于网络的应用程序中，该应用程序可用于任何具有线性基础设施的水道交叉点。

Flood events can cause significant damages to linear engineering infrastructure, such as roads, railways or**pipelines, at locations of intersection of the infrastructure with the watercourse (river). It is hence important to**quantify the actual risks associated with these flood events for costly infrastructure. This requires the**availability of streamflow data at the locations of interest. Since these linear infrastructure can span over**thousands of kilometers, it is impossible to have hydrometric stations at all locations of intersection.**Hydrologists are hence often required to produce flood quantile estimates at ungauged crossings. The main goal**of the proposed ENGAGE research project is to develop approaches for the estimation of daily discharges at**ungauged watercourse crossings of linear infrastructure. A number of approaches will be developed and**adapted to the various conditions that may be encountered by BGC in North America (mountainous terrain,**Nordic region with ice effect, etc.). The main principle is to efficiently transfer Streamflows recorded at a**number of gauged locations to the ungauged site of interest. Adequate procedures will be developed to**delineate sets of gauged stations representing conditions that are similar to the target site. Then, appropriate**estimation techniques will be used to carry out the information transfer. Once a synthetic historical series is**generated at the target site, it is possible to carry out the appropriate flood frequency analysis procedure to**estimate flood quantiles corresponding to different return periods. The developed approaches can also be used**on a real-time basis to estimate instantaneous streamflows at the target location of interest. The developed**approaches will be grouped in a tool that can be easily used at any location in North America. The tool can**eventually be integrated in the River Network Tools (RNT) web-based application developed by our partner**BGC and which can be used for any location of intersection of watercourses with linear infrastructure.