04/07/2022 - Sunrise Park Selected as Site of New Water Reservoir City of Tigard
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Tigcar d PRESS RELEASE
13125 SW Hall Boulevard, Tigard, Oregon 97223 • www.tigard-or.gov
FOR IMMEDIATE RELEASE I April 7, 2022
Contact:
Marissa Grass
Community Engagement Coordinator
City of Tigard
Phone: 503-718-2428
Email: marissa@tigard-or.gov
Sunrise Park Selected as Site of New Water Reservoir
Tigard Public Works is excited to announce a major milestone for the new Reservoir 18 and
Pump Station project. After a detailed review, the technical project team has selected
Sunrise Park as the best location for reservoir construction.
The new reservoir will ensure enough healthy, safe water to:
• Keep pace with the city's growth
• Meet peak demand periods
• Navigate emergencies and natural disasters
Comparative Analysis
The project team considered both Sunrise Park and the Cach Water Site for construction.
The city owns both sites and both are at elevations suitable for constructing the reservoir.
The project team conducted a comparative site analysis. It looked at several main site
selection factors including permitting and project risks, cost and constructability, outside
impacts, and operations and resiliency. The team then broke down these main categories
further into weighted criteria to compare the two sites.
Sunrise Park is preferred based on the following key considerations:
• Favorable constructability — especially for the staging area, stockpiling and hauling,
and less reservoir foundation work.
• Lower construction cost
• Less constrained site — allowing flexibility of maintenance and future facilities.
• Additional flexibility — relative to sizing a larger reservoir at the site or possibly
raising the overflow elevation of the proposed reservoir to reduce earthwork costs.
• Easier permitting process — there are no wetlands at this site
• Reduced construction impacts to the neighborhood — especially heavy truck traffic
along portions of Sunrise Lane.
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City of Tigard
Tigard PRESS RELEASE
About Sunrise Park
The Sunrise Park property is located on Bull Mountain at the northeast corner of SW 150th
Avenue and Sunrise Lane. The City of Tigard purchased the 19.43-acre site in May 2011 with
funds from the Parks Bond Program. Three dominant traits of the site include an open
meadow surrounded by dense forest, steep slopes, and spectacular views to the north and
west. Through a design process and public outreach in 2013, the city decided that the site
is best suited to small group activity and passive recreation.
The Water Reservoir project will support an engagement process for Tigard Parks &
Recreation to refine specific ways the Reservoir can enhance Sunrise Park. As an added
benefit, the Reservoir Project will be able to leave the site in a condition that allow for
beneficial future park features. This could include some additional site grading to allow for
future trails or viewing areas for the surrounding natural areas.
This is not the first time the city will co-locate water and park infrastructure. Elizabeth Price
Park (13001 SW Bull Mountain Road) is built atop an underground reservoir. Among the
park's unique features is a winding interpretive trail that leads park-goers to a viewpoint
and compass inlaid in concrete.
Next Steps
To meet the City's stated timeline/schedule for the project, we've already begun
geotechnical explorations of the reservoir site, including drilling and geophysical surveys.
Next, we will do a site survey, arborist evaluation, and initial permitting work to support the
design process.
Stay Tuned and Get Involved
Volunteers are needed for the project committee. The Community Advisory Committee will
meet up to five times for up to two hours each—virtually and/or in person depending on
evolving heath guidelines—over the course of this year to discuss project goals and the
nature and location of potential park features. We also plan to visit Sunrise Park for a site
tour. Sian up to volunteer
For more information about the Water Reservoir project visit www.engage_tigard-
or.gov/reservoir
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