This project involved the siting, design, and construction of two (2) woody debris complexes in the lower South Fork Stillaguamish River. A standard engineering feasibility study was completed, including designs for specific project elements. The project is consistent with and implements the Stillaguamish Chinook Recovery Plan, 3-year Implementation Plan, recent budget requests, and a developing strategy for conservation of South Fork chinook salmon. The objective is to increase woody debris frequency in priority reaches of the Stillaguamish watershed for the purposes of increasing quantity and quality of adult holding and juvenile rearing habitat, sorting sediment, and introducing roughness to slow down the velocity and, thus, the stream (erosive) power of the river. Installation of two (2) log jams (consisting of 50 to 60 pieces of wood each) is expected to increase the hydraulic and habitat diversity, provide excellent hiding and shade cover for juveniles migrating downstream and feeding, and potentially increase adult holding capacity. Log jams can be stable over a period of 80 years or more. This provides a critical link between current conditions and a future in which more natural log jams can occur as a result of increased recruitment of large wood due to protection and restoration measures in the Plan.