- Location
- Oregon
- Project code
- SD-26-14
West Slope Seismic Water Storage Project
The District is proposing to construct a new 3.0 million gallon earthquake-resilient finished water reservoir. This project will replace aging, non-resilient storage and increase total system capacity from 5.25 MG to 8.25 MG, helping the District move closer to the industry standard of three days of peak demand storage, while improving system reliability and enhancing emergency preparedness.
Last verified Sep 25, 2026 2 official source families
Project brief
What is proposed
The District is proposing to construct a new 3.0 million gallon earthquake-resilient finished water reservoir. This project will replace aging, non-resilient storage and increase total system capacity from 5.25 MG to 8.25 MG, helping the District move closer to the industry standard of three days of peak demand storage, while improving system reliability and enhancing emergency preparedness.
Latest material change
Added during OHA's 3Q2026 DWSRF priority-list cycle
OHA lists the project for DWSRF funding consideration; the workbook does not establish a formal procurement date.
Commercial scope
Confirmed work and commercial interpretation
What is proposed
The District is proposing to construct a new 3.0 million gallon earthquake-resilient finished water reservoir. This project will replace aging, non-resilient storage and increase total system capacity from 5.25 MG to 8.25 MG, helping the District move closer to the industry standard of three days of peak demand storage, while improving system reliability and enhancing emergency preparedness.
Potential commercial work
Waterline IQ interpretation of accepted scope. These items are not confirmed contract packages or specifications.
Pumping and storage
Water storage tank
Process and controls
Process piping and valves
Civil and site work
Seismic water infrastructure and Concrete and structural
Selected lifecycle
Key official milestones
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Official event
Added during OHA's 3Q2026 DWSRF priority-list cycle
OHA lists the project for DWSRF funding consideration; the workbook does not establish a formal procurement date.
View evidence for Added during OHA's 3Q2026 DWSRF priority-list cycle -
Official event
OHA publishes project in revised DWSRF public-comment list
The project appears in OHA's June 9, 2026 revised public-comment PPL, preserving a second official project-specific publication record.
View evidence for OHA publishes project in revised DWSRF public-comment list
Evidence and sources
9 accepted claims across 2 official document versions
Selected official evidence · Inspect exact excerpts and locators
2026 Q3 Combined Base DWSRF and IIJA General Supplemental PPL — public-comment PDF
OHA DWSRF infrastructure project priority list — public-comment edition“ADA. West Slope Water District Issues: Project addresses the lack of earthquake-resilient finished Rating results include: water storage. 0 pts (Affordability) SD-26-14 Project: The District is proposing to construct a new 3.0 million 1 pts (Water System Si...”
2026 Q3 Combined Base DWSRF and IIJA General Supplemental PPL
OHA DWSRF infrastructure project priority list“13 | West Slope Water District SD-26-14 Washington Jeff Hampton / Matt Mattia 11,000 | | Issues: Project addresses the lack of earthquake-resilient finished water storage. Project: The District is proposing to construct a new 3.0 million gallon earthquake-...”