Washington Park Underground Drinking Water Reservoir and Reflecting Pool
Sector: Water Supply and Storage • Location: Portland, Oregon, United States
Source: OregonLive
The project transformed Washington Park’s two aging open-air drinking water reservoirs into one seismically resilient underground reservoir topped with a cascading reflecting pool and a public promenade. The new reservoir has a capacity of 12.4 million gallons and serves 360,000 people in Southwest Portland. The project addresses EPA regulations banning uncovered reservoirs and is designed to with
- Status
- Closed
- Sector
- Water Supply and Storage, Government
- Location
- Portland, Oregon, United States of America
- Updated
- 22 Jul 2026
- Source
- OregonLive
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Project Information
Participants
Sponsoring Agency |
Status
Original status | Completed |
Taiyo status | Closed |
Taiyo last update | 2026-07-22 |
Contact
| Not available for this record. |
Description
Description | The project transformed Washington Park’s two aging open-air drinking water reservoirs into one seismically resilient underground reservoir topped with a cascading reflecting pool and a public promenade. The new reservoir has a capacity of 12.4 million gallons and serves 360,000 people in Southwest Portland. The project addresses EPA regulations banning uncovered reservoirs and is designed to withstand a Cascadia Subduction Zone earthquake. The promenade around the reflecting pool is set to open to the public on June 14, 2025. |
Original sector | Water Supply Infrastructure |
Budget |
Location
Country | United States of America (USA) |
State | Oregon |
City | Portland |
Source
Source | OregonLive |
URL |
More Details
Record type | Project |
Sector | Water Supply and Storage, Government |
Article published date | 2025-05-26 |
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