This assessment is being proposed in anticipation of future removal of the diversion dam fish passage barrier, and to guide the development of other restoration projects in the Middle Fork Nooksack River watershed. The assessment will cover the main channel habitat in the Middle Fork, approximately 18 miles. Conducted under state guidelines, it will follow protocol similar to that used in the other two assessments. The primary objective will be to characterize the habitat-forming processes that occur in the watershed, review and summarize existing data and develop recommendations for habitat protection and restoration projects for the recovery of endangered species. Data collection will include detailed habitat mapping of the channel, wood characterization and mapping, substrate characterization and mapping, riparian characterization and bank condition mapping. The Middle Fork is the last of the three forks (North & South) of the Nooksack River to be comprehensively assessed for habitat conditions, and with the impending restoration of fish passage into the upper 10 miles of the river, it is an important time to begin assessment work of future salmon habitat. The assessment will also identify a project for 50% design completion.