The article below, written by Professional Engineer Nathan Polanski of SvR Design Company, is based on a presentation Nathan gave to the Landscape and Environmental Design Committee of the Transportation Research Board at that organization’s Annual Meeting in Washington, DC this January.
—Craig Churchward and Wendy Miller, Landscape Architecture and Transportation PPN Co-Chairs
Integrating Green Stormwater Infrastructure into the Streetscape
Across the country, local governments are integrating green stormwater infrastructure (GSI) into the streetscape to manage urban stormwater runoff. More frequently implemented to reduce combined sewer overflows (CSOs), streetside GSI also treats polluted runoff that includes oil, heavy metals, and carcinogens to help protect the quality of local water bodies. Often overlooked, however, is the vital role that GSI can play in creating a thriving, pedestrian-friendly streetscape by providing physical buffers, reducing imperviousness, increasing opportunities for tree canopy, mitigating heat island effect, and promoting traffic calming.