Portland: City Unveils Largest Urban Rain Garden in the United States

Portland Unveils Largest Urban Rain Garden in the United StatesPortland Unveils Largest Urban Rain Garden in the United States Portland, Oregon has taken a significant step towards sustainable urban water management by unveiling the largest urban rain garden in the United States. Spanning over 1.2 acres, this innovative stormwater infrastructure is designed to capture and filter polluted runoff from surrounding streets and buildings. The rain garden, located in the Lloyd District, features a series of terraced basins filled with native plants and soil. As stormwater flows through these basins, pollutants such as sediment, nutrients, and heavy metals are absorbed and broken down by the plants and soil. The filtered water is then slowly released into the nearby Willamette River. This urban oasis not only improves water quality but also provides numerous benefits to the community. The lush vegetation attracts wildlife, creating a vibrant urban habitat. The garden also offers recreational opportunities, with pathways for walking and passive recreation. “This rain garden represents Portland’s commitment to environmental stewardship,” said Mayor Ted Wheeler. “By investing in innovative stormwater solutions, we are creating a cleaner, healthier city for our residents and future generations.” The project was funded through a collaboration between the City of Portland, Portland Water Bureau, and Metro, the regional government. The design was developed by the Portland Design Commission, the ZGF Architects design team, and the Greenworks landscape architecture firm. “We are proud to be part of this transformative project,” said Portland Water Bureau Director Mike Stuhr. “The urban rain garden is a tangible example of how we can manage stormwater sustainably and create a greener, more resilient city.” This urban rain garden is a testament to Portland’s leadership in sustainable urban development. Its innovative design and multiple benefits serve as a model for other cities seeking to address the challenges of stormwater pollution and urban heat island effects.