Submerged roads and damaged infrastructures serve as stark reminders of the devastation brought on by massive flooding in Northwestern Washington, caused by atmospheric rivers in December 2025. The U.S. Army Corps of Engineers Seattle District played a critical role in coordinating and executing flood response efforts in support of local and state government partners. USACE’s provide engineering solutions to reduce risks and minimize damage when the area was overwhelmed by flooding to the region, marking one of the most severe weather events in recent history.

U.S. Army Corps of Engineers, Seattle District, JBLM Army Garrison, and 1st Special Forces Group leadership joined together to celebrate the Department of War's largest-to-date construction project using mass timber structural materials during a groundbreaking ceremony, Dec. 12, 2025.

After relentless rainfall in December 2025, the swelling rivers, in Northwest Washington, threatened nearby infrastructure, highlighting the immense challenges faced during the emergency.

Seattle District teammates scrape barnacles from one of the large lock culverts at at the Hiram M. Chittenden Locks, an annual event which prevents injury to migrating fish.