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The City of Portland, Oregon

Portland Water Bureau

From forest to faucet, we deliver the best drinking water in the world.

Customer Service: 503-823-7770


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Washington Park Reservoir Improvement Project

  • Project Updates Stay in the know about project progress! Sign up to receive emailed updates.

  • Upper Reservoir - Pump House View The new reservoir is engineered to withstand ongoing landslide encroachment and seismic events.

  • Serving Portland Since 1895 When completed, the new reservoir will provide service for at least another 100 years.

  • Lower Reservoir 4 - Downtown View A lowland wildlife habitat area, bio-swale, and reflecting pool will be constructed.

  • Supplying Water to Portland's West Side Serving more than 360,000 people, 20 schools, three hospital complexes, 60 parks, and major attractions.

  • Upper Reservoir 3 - Grand Staircase View The new reservoir, in the footprint of the historic Reservoir 3 (upper), features a reflecting pool at ground level.

  • Washington Park Reservoir Improvement Project A new 12.4-million gallon, seismically reinforced underground reservoir.

  • Lower Reservoir 4 - Powerhouse View Existing Reservoir 4 (lower) will be disconnected from the public drinking water system.


Take the Virtual Tour


Updated: June 20, 2018

What's Happening Now

Tours are happening now! In fact, you can take a virtual tour online, right now. No need to lace up your hiking boots and put on a safety vest or hardhat. Just sit back, grab your mouse, and take your time visiting the site. You can see videos and photos of current activities, learn about the project design, and see historic photos and illustrations of the finished project, all from the comforts of home! To start the virtual tour, visit the project webpage or click HERE.


Speaking of tours, if you would like a more interactive experience you can sign up for an in-person tour. This is your opportunity to learn about construction methods, future activities, schedule, and much more. Tours will be led by the project manager and principal engineer. 

Who Can Attend: Adults and children over 10 years of age are welcome to register. All attendees should be prepared to navigate stairs, elevation changes, rough and uneven surfaces, and walk and stand for more than an hour. 

Tour Information: Tours will be conducted Saturday, July 21, 9:00 a.m. – 10:00 a.m. and 10:30 a.m. – 11:30 a.m. There is room for 20 people per tour. Each person must register separately to attend a tour. Slots will fill quickly, so register now!

    9:00 a.m. – 10:00 a.m. register at

  10:30 a.m. – 11:30 a.m. register at  

Come prepared for the day. Be sure to wear closed-toed boots or sturdy shoes and weather appropriate clothing. Safety vests and hardhats will be provided.


To see photos and learn more about activities on-site over the past month, check out the monthly update HERE.

Did You Know?

Conserving water benefits the environment and helps you save on your water bill. Learn about conserving water inside and out, free water conservation devices, efficiency assistance, and rebates available to you.

For more information visit:

Project Overview

Including the project description, map and schedule

Community Outreach History

Sign up for email updates and other project notifications.

Stay Informed

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Traffic Impacts

Beginning April 2, 2018