Project overview
The Water Bureau has replaced original 1894 reservoirs with a new 12.4-million-gallon, seismically reinforced underground reservoir. This reservoir supplies water to Portland’s west side. It serves more than 360,000 people, including all downtown businesses and residents, 20 schools, 5 hospital complexes, and more than 60 parks.
The new public space includes two reflecting pools, a wildlife habitat area, public walking paths, educational elements, and restored historic features.
The reservoir site is temporarily closed
We’re still working to complete some elements of the reflecting pools, promenade, and surrounding areas on top of the reservoir. Because the site is an active construction area, it is not yet ready for permanent public access.
Our top priority is ensuring that the site meets the highest standards of safety, quality, accessibility, and sustainability. The Water Bureau and our partners will alert the public when we set a date for the permanent opening of the park.
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Happening now
Last updated July 1, 2025
Several items need attention before the site can be safely and permanently opened to the public. The final to-do list includes eliminating pedestrian hazards, installing safety signage, and continuing work on the hypochlorite system and reflecting pool pumps.
We will continue share updates on this web page and through our project newsletter.
Historic lighting
The 100-year-old light fixtures that were once part of the fences around the reservoirs are being restored and refabricated. Existing fixtures were removed and shipped to Spring City Electrical in Pennsylvania, where they’ll be restored and made operational. Missing lights will be replaced with new fixtures cast from a mold of an original fixture.
Spring City Electrical is currently working on the same light fixtures for the Mount Tabor reservoirs. Once the Mount Tabor fixtures are complete, Spring City Electrical will start work on the Washington Park Reservoir fixtures. Light fixtures are set to be delivered and installed in 2025.
Learn more about the Washington Park Reservoir improvement project
Sneak peek celebration
On Saturday, June 14, we invited community members to the Washington Park Reservoir for a sneak peek of the new reflecting pools. With vendor booths, music, tours, and speeches, the well-attended event had something for everyone.
Thank you to all the Washington Park partners, City of Portland teams, and community organizations who made the event so fun and festive.