15 Dec 2025

USACE is working with King County officials to support Desimone Levee breach

King County officials reported a breach at the Desimone Levee in Tukwila, Washington, to the U.S. Army Corps of Engineers Seattle District at approximately noon Dec. 15.

14 Dec 2025

Army Corps regulates water flows to protect downstream communities on the White and Green River Basins

Army Corps' Water Management will reduce outflows from Howard A. Hanson Dam, before the next atmospheric river hits western Washington, Dec. 14-16. Mud Mountain Dam will also reduce outflows within the next 24 hours.

13 Dec 2025

Army Corps releases water from Howard A. Hanson Dam and Mud Mountain Dam Reservoirs, prepares for predicted rain events

Peak rainfall from recent atmospheric rivers in the Green and White River basins has passed, however, high flow conditions will continue for many days.