Channel-forming discharge estimation for stream restoration design

河流支撑着宝贵的水生生态系统。持续的城市发展和农业实践导致许多河岸坍塌，水生生态系统退化。为了尽可能多地拯救不同的水生生态系统，北美各地的社区每年都在进行数百万条溪流的恢复项目。仅在美国，据估计，自1990年以来，每年在这些修复项目上花费的资金约为10亿美元。尽管耗资巨大，但许多修复项目都失败了。这些故障的大多数原因是对一个重要的设计参数估计错误或不准确，即形成沟槽的流量。拟议研究的主要目标是开发更准确的方法来估计河道形成的流量。这将通过数据收集和分析、数学模型开发和测试以及计算机模拟来实现。

Rivers support precious aquatic ecosystems. Continued urban development and agricultural practices cause many river banks to collapse and aquatic ecosystems to degrade. In an effort to save as many diverse aquatic ecosystems as possible, communities across North America are undertaking millions of stream restoration projects per year. In the U. S. alone, it is estimated that about $1 billon a year is spent on these restoration projects since 1990. Many of these restoration projects failed despite the huge expenses. The reason for the majority of these failures is the wrong or inaccurate estimation of one important design parameter, known as the channel-forming discharge. The main objective of the proposed research is to develop more accurate approaches for the estimation of channel-forming discharges. This will be accomplished through data collection and analysis, mathematical model development and testing, as well as computer simulation.