The goal of this project is to quantify distribution of juvenile and adult Chinook salmon in the Yukon River mid-mainstem, in areas of limited knowledge, to allow for greater protection and to identify potential spawning and rearing habitat restoration sites. Specifically, the objectives are to 1) conduct habitat assessments to characterize aquatic health and habitat, and to determine the extent of juvenile Chinook distribution, and 2) determine the extent of spawner distribution within tributaries to the Little Salmon River, Nordenskiold River and Big Creek. The data will also be used to update the Little Salmon Carmacks First Nation (LSCFN) salmon database, created by the LSCFN Salmon Knowledge Study (CRE-141N-10).