Public comment period on draft Mud Mountain Dam Fish Passage Project open until April 17

Published March 23, 2015

The U.S. Army Corps of Engineers is seeking public comments on its draft Environmental Assessment and draft Finding of No Significant Impact for Mud Mountain Dam Fish Passage Project. The public comment period ends April 17, 2015.

The Mud Mountain Upstream Fish Passage Facility was constructed as mitigation for the loss of fish passage due to the construction of Mud Mountain Dam that was completed in 1941.  The project is located at River Mile 24.3 on the White River in Pierce and King Counties near the Cities of Enumclaw and Buckley on the White River, which is a tributary entering the Puyallup River about 10 miles above the Puyallup River’s mouth at Commencement Bay, Puget Sound. 

The Corps is proposing to construct a replacement fish trap and haul facility, and a replacement fish passage barrier, as well as upgrading access roads to the fish trap and the release site. The proposed new fish trap facility would be constructed on the right bank of the river directly across from the existing fish trap facility.

The project replaces a 100-year-old barrier and a 70-year-old fish trap.  The replacement is designed to pass more than 1 million fish to ensure all fish are passed in a safe, timely and effective manner.

The planning of the new facility has been a collaborative effort using a Regional Design Team with representatives from National Marine Fisheries Service, Muckleshoot Indian Tribe, Puyallup Tribe of Indians, Washington Department of Fish and Wildlife, and Cascade Water Alliance.

The draft EA and draft FONSI are available on the Seattle District website at: (Draft EA), and (Draft EA appendices).

To submit public comments on this Draft EA and FONSI, correspondence should be directed to: Michael Scuderi, Environmental Resources Branch, telephone (206) 764-7205; via e-mail at; or at the address below:

Michael Scuderi

U.S. Army Corps of Engineer District, Seattle


P.O. Box 3755

Seattle, Washington 98134

To become part of the record and to be considered in the decision, comments on this notice must be postmarked no later than April 17, 2015. In your response, please refer to the public notice number CENWS-EN-ER  15-05, Mud Mountain Dam Upstream Fish Passage Environmental Assessment, March 18, 2015. If no response is received and postmarked by the closing date, a “no comment” response will be assumed.

Tanya King

Release no. 15-005