Low Impact Development
Urbanization and associated changes in the movement of stormwater over and through the landscape are some of the greatest and most complex threats to water quality, water supplies, and aquatic habitat in the Puget Sound region. Read more »
Low Impact Development Technical Guidance Manual
The purpose of the low impact technical guidance manual (5.2 mb) is to provide stormwater managers and site designers with a common understanding of low impact development (LID) goals, objectives, flow reduction credits, and specifications applicable to the Puget Sound region. Continued research and distribution of the current state of knowledge through this document and other forums will facilitate the application of LID tools toward the more effective management of stormwater runoff and protection of our streams, lakes, wetlands, and Puget Sound.
In addition to the guidelines for specific practices, this manual provides research and data related to those practices to help managers and designers make informed decisions when adapting LID applications to their jurisdiction.
Low impact development is a new and evolving management approach; accordingly, this document will evolve and be periodically updated as additional research becomes available and designers gain more practical experience in the region. This is a technical manual and the information provided is targeted for engineers, planners, landscape architects, technical staff for policy makers, and developers. The manual can be found here.
Additional Information
Low Impact Development Research Trends and Needs - a presentation by watershed ecologist Curtis Hinman (2 Mb PDF)
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