D Avenue Green Stormwater Enhancement

The City of Lake Oswego is working to restore pavement, address flooding and drainage issues, and improve water quality along a 10-block section of D Avenue, a residential street in the First Addition Neighborhood. Herrera and the City saw this as an opportunity to not only improve infrastructure but to enhance the neighborhood with the many benefits that Green Stormwater Infrastructure (GSI) offers. We led landscape architecture design and provided engineering support for stormwater design along the project corridor. Our assessment identified effective approaches given site soils, vegetation, infrastructure, and other constraints. Our landscape architect lead team of designers worked with the City to conduct outreach to residents to develop facility designs appropriate for site conditions, while preserving neighborhood character and meeting the maintenance constraints of City staff. We also lead permitting and coordination related stormwater management manual compliance. This was a fun and rewarding project involving multiple stakeholders and providing numerous cobenefits for the community.