The South Fork Nooksack (SFN) early Chinook population is considered essential for ESU recovery, but abundances are critically low and immediate action is necessary to ensure population persistence. A recent reach assessment and restoration planning effort identified limiting factors and causes of habitat degradation and recommended specific restoration strategies and locations. This project advanced project implementation in a reach that scored 3rd highest among 18 reaches in the South Fork in terms of restoration potential; projects in the other two reaches are already underway. Specifically, this project: developed construction-ready designs, conducted flood risk analysis, and prepared permits for construction of engineered log jams in the South Fork Nooksack River, Sygitowicz Reach (~RM 4.0). Log jams will be designed to address the factors most limiting SFN early Chinook in the reach, including low habitat diversity, lack of deep holding pools with cover, and high water temperatures, by encouraging formation of deep, thermally-stratified pools in an area of groundwater discharge. The project will build upon and interact with a SRFB-funded log jam project constructed downstream from the reach in summer 2008.