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You are here: Home / Public Works / Kelly Butte Reservoir, Portland

Kelly Butte Reservoir, Portland

July 10, 2019 By CMTS LLC

Kelly Butte Reservoir Replacement during construction

The Kelly Butte Reservoir project replaced an existing 10 MG steel tank with a new buried 25-million-gallon reinforced concrete reservoir in the same general location.

This was part of the City of Portland’s compliance with federal rules regarding the disconnection of open reservoirs from the city’s water system.

Kelly Butte Reservoir Replacement during construction. Photo courtesy of Northwest Geotech Inc.

CMTS performed inspection and document control services for the Agency/Owner, including construction field observation, inspection coordination, construction cost accounting, start-up assistance. record drawings, post-construction evaluation, warranty review, and project closeout.

Kelly Butte Reservoir Replacement during construction. Photo courtesy of the City of Portland.

The new reservoir footprint is 394 x 296 feet, reinforced concrete, with 252 roof support columns, creating two 12.5-million-gallon reservoir cells. The reservoir is buried with the landscaped surface. The project included additional and upgraded piping to the new reservoir, entry and exit control valves, and space for associated controls and telemetry. The $90 million project was completed in 2015.

Kelly Butte Reservoir replacement complete aerial view. Photo courtesy of the City of Portland.

Filed Under: Public Works Tagged With: Oregon

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