Designing a Complete Water Sensitive Community through Low Impact Development Practices

拟议的研究将涉及评估低影响开发（LID）系统对河流，河流，池塘和湖泊等接收水系统的影响。这将通过研究和比较新城市化或改造的社区来实现，这些社区主要通过LID系统管理和处理雨水，并与拥有传统雨水系统（路缘石和排水沟，湿雨水管理池）的社区进行比较。LID系统已成为加拿大各社区越来越明显的基础设施投资，因为市政当局面临着老化和昂贵的基础设施，不断增长的城市人口以及与气候变化相关的风险增加的综合影响。尽管对LID系统的需求不断增长，但人们对LID项目对受水区的集体影响知之甚少。虽然有几项研究探讨了个人和孤立的LID系统的性能，有关于LID在社区或集水区scale.The直接影响的长期影响的信息缺乏，这种知识差距是一种倾向，过度设计LID系统，并产生costprohibiting设计。虽然研究表明，LID系统提供了一个净效益的城市流域，有没有普遍接受的方法来评估其有效性在集水区一级。在雨水行业中，人们越来越意识到，LID系统设计有很大的优化空间，可以最大限度地提高城市集水区和接收沃茨的效益。加拿大有机会成为LID技术和雨水系统设计创新的推动者。

The proposed research will involve the evaluation of the effects of Low Impact Development (LID) systems onreceiving water systems such as streams, rivers, ponds and lakes. This will be achieved by studying andcomparing newly urbanized or retrofitted communities where stormwater is primarily managed and treatedthrough LID systems with communities that possess traditional stormwater systems (curbs and gutters, wetstormwater management ponds). LID systems have become an increasingly visible infrastructure investmentthroughout Canadian communities as municipalities are faced with the combined effects of aging and costlyinfrastructure, growing urban populations, and increased risks associated with climate change. Despite thegrowing demand for LID systems, little is known about the collective influence of LID projects on receivingwaters. Although several studies have explored performance of individual and isolated LID systems, there is adearth of information regarding the long-term implications of LID at the neighbourhood or catchment scale.The immediate effect of this knowledge gap is a tendency to overdesign LID systems and generating costprohibitive designs. Although research suggests that LID systems provide a net benefit to urban watersheds,there is no universally accepted means to evaluate their effectiveness at the catchment-level. Within thestormwater industry there is a growing sense that there is significant room to optimize LID system design tomaximize benefits for urban catchments and receiving waters. There is an opportunity for Canada to become adriver of innovation in LID technology and the design of stormwater systems.