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    U.S. Army Corps of Engineers, Northwestern Division      

     

    Subordinate Units


    Below-average runoff leads to reduced navigation flow support and shortened season

    Recent News Stories

    Erosion moves mountains: USACE’s relentless reply...

    07.01.2026 | Story by Andria Allmond
    After a century of quiet, Mount St. Helens - known to the Cowlitz as Lawetlat’la, or The Smoking Mountain - announced its wrath in 1980. The eruption wasn't a singular event. It began a decades-long geological and engineering challenge for Portland District, U.S. Army Corps of Engineers. "With the continued sediment outwash, it could be said the eruption never stopped," said Portland District Civil Engineer and Technical Lead Todd Hansen....

    The simply written stories of the complicated...

    06.23.2026 | Story by Andria Allmond
    “Bonneville Dam is complicated." When our media desk at at the Portland District heard the dam underwent a safety reclassification, we knew it was a major story. Here is what the U.S. Army Corps of Engineers safety data actually means for the region: According to our Dam Safety Program Manager, Matt Chase, “Bonneville Dam is working well and operating safely today... The new understanding of risk just helps us know what to fix for the...
    Missouri River Monthly Update - July 2026

    Recent Images

    Garrison Dam Powerhouse

    Garrison Dam Powerhouse

    06.25.2026 | Photo by Delanie Stafford
    An early morning scenic photo of the Garrison Dam powerhouse looking south at the downstream side of the Missouri River. (U.S. Army Corps of...

    Recent Audio

    Podcasts

    Missouri River Basin Water Management

    Missouri River Basin Water Management

    Courtesy Audio
    Following historic flooding in the Missouri River Basin during 2011, the U.S. Army Corps of Engineers, Northwestern Division committed to...

    Recent Videos

    Commanding Unit