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Newport provides update on Big Creek dam replacement, ongoing seepage repairs and funding work
Summary
City staff briefed the council on the long-running Big Creek dam safety issue, current 30% design for a roller‑compacted concrete replacement, state‑funded design work, a new funding study by Stantec and ongoing seepage repairs at Dam No. 2.
City Manager Nina Vetter and City Engineer Chris Beatty briefed the Newport City Council on the status of the Big Creek dam replacement program, describing both long‑term replacement planning and near‑term seepage repairs at Big Creek Dam No. 2.
Vetter summarized the history: the city’s two earthen Big Creek dams (one built in 1951 and the other in 1968) were identified in 2011 as having soils at the dam base that are subject to liquefaction in a seismic event. "That means in a seismic event, [it] would likely create significant damage and potential loss of life," she said. Engineers subsequently evaluated alternatives…
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