Suiattle Slough is a side channel complex 2.5 miles upstream of the mouth of the Suiattle River. The project site is located in Section 22, Township 33N, Range 10E. This project, completed in 2005, involved the removal of a deteriorating wooden fish ladder and dam built in 1988. The fishway was replaced with a series of log weirs to maintain water levels, improve fish passage and increase spawning and rearing habitat. Native trees and shrubs were planted along the project site during the spring of 2006. Suiattle Slough is primarily used by coho salmon and cutthroat trout, other species include steelhead trout, Chinook and chum salmon.