SEATTLE -- UPDATE: The levee breach repair near Pacific Park, Washington, is complete and functioning as intended. U.S. Army Corps of Engineers, Seattle District Water Management increased flows Dec. 18 at 7:00 a.m. by 500 cubic feet per second (cfs) to about 8,540 cfs. This change in flow will reach the area of the levee repair by around 11:00 a.m. USACE will assess the impact of the increased flow and tentatively plans to increase by another 500 cfs, following a positive result.
King County officials reported a HESCO breach in Pacific, Washington to the U.S. Army Corps of Engineers Seattle District at approximately 1:30 a.m. on Dec. 16.
Seattle District personnel are on the ground and working with King County officials to assess damage and determine next steps.
“Under Public Law 84-99, Emergency Response to Natural Disasters, the Corps of Engineers has the authority to provide emergency support to state and local governments before, during and after flood events,” said Krystle Walker, Seattle District chief of emergency management. “This authority allows the Army Corps to provide both technical assistance and direct assistance in response to flooding.”
USACE will deploy HESCOs, sandbags, and super sacks for direct assistance.
USACE remains in close coordination with King County and will continue to provide support as requested.
We have become aware that there are reports of a water release at Mud Mountain Dam at 11:30 a.m. today. We have reduced outflows at the dam so that King County can conduct repairs.
"We are tracking the situation at Pacific as it relates to outflows from Mud Mountain Dam," said Travis Ball, Seattle District chief of hydraulic and construction engineering. "After being notified of the breach, we reduced outflows at Mud Mountain Dam to help support repair efforts and response actions. That reduced outflow will remain in place until we receive confirmation from our ground crews and emergency management partners that conditions are safe to resume normal flood operations."
The public is urged to remain vigilant as flood conditions can change rapidly. Residents seeking resources or assistance should contact their local government offices.
For additional information, King County’s Emergency Blog is available at https://kcemergency.com/. Pierce County residents can find emergency resources at https://www.piercecountywa.gov/104/Emergency-Management.