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.

28 Mar 2025

USACE increases outflows at Mud Mountain Dam April 1

U.S. Army Corps of Engineers will increase outflows from Mud Mountain Dam, starting April 1. The operating project has been storing more water than usual to support essential construction work at its fish passage facility located near Enumclaw, Washington.

23 Jun 2022

43 fish die in Mud Mountain Dam fish passage facility

Two physical barrier mishaps occurred at the new Mud Mountain Dam fish passage facility June 22 and June 26, which left 42 Chinook salmon and one bull trout dead.

9 Feb 2018

Corps of Engineers lowering White River flows for barrier dam repairs

SEATTLE – U.S. Army Corps of Engineers officials will lower White River flows from Mud Mountain Dam beginning February 11, 2018, to make repairs on the White River Diversion Dam near Buckley, Washington. Flows about 2,000 cubic feet per second (cfs) are expected February 11 and will reduce to 350 cfs by February 14 and remain there through February 16. Flows are reduced for worker safety while making the repairs.

25 Oct 2017

White River Chinook runs rising through collaborative efforts, operational changes

SEATTLE – The White River’s 2016 Chinook salmon run numbers were the best seen in 71 years until 2017’s run. Runs consistently averaged 1,565 in the early 2000s, but 2017’s count as of mid-October was 15,565, a 67 percent increase from 2016’s 9,347 total.

22 Oct 2017

Army Corps responding to Western Washington flooding

The Emergency Operations Center at the U.S. Army Corps of Engineers activated Friday and the Snohomish River basin flood team has been active this weekend assisting local communities at Union Slough near Everett and in Index, Washington.

20 Oct 2017

Army Corps ready to respond as Western Washington rivers on flood watch

SEATTLE—The Emergency Operations Center at the U.S. Army Corps of Engineers is activated and on extended shifts until further notice as flood watches and warnings have been issued for Western Washington rivers. Rivers are expected to crest Saturday night into Sunday.

19 Feb 2016

Corps of Engineers activates Emergency Operations Center

U.S. Army Corps of Engineers, Seattle District, has declared a district emergency and put its Emergency Operations Center into operation Feb. 19. The emergency declaration by Col. John Buck, Seattle District commander, is to address current weather conditions and a growing pool in the reservoir at Mud Mountain Dam in Enumclaw, Washington, on the White River.

12 Feb 2016

President's Fiscal 2017 Budget for U.S. Army Corps of Engineers Civil Works released

The President’s Budget for fiscal year 2017 includes $4.620 billion in gross discretionary funding for the Civil Works program of the U.S. Army Corps of Engineers, including nearly $74 million for Seattle District programs and projects.

10 Dec 2015

Corps of Engineers assisting with Northwest flood fights and coastal storm

U.S. Army Corps of Engineers, Seattle District, flood teams remain out in several basins around the Northwest to respond to flooding and a predicted coastal storm.