On September 22, 2000, the National Marine Fisheries Service (NMFS) received a request from the U.S. Army Corps of Engineers (COE) for Endangered Species Act (ESA) section 7 formal consultation for the West Fork Dairy Creek (Soupy Mud) erosion repair project (Corps No. 2000- 862). The project will repair the erosion along the Nehalem Highway (Highway 47) at milepoint 74.8, located about 1.5 miles north of the Sunset Highway in Washington County, Oregon. The West Fork Dairy Creek is a tributary of the Tualatin River. The dominant land use upstream of the project area is forestry. The watershed has been logged intensively in the past 10 years. This biological opinion (Opinion) is based on the information presented in the biological assessment (BA) and the result of the consultation process. The consultation process has involved a site visit, and correspondence and communications to obtain additional information and clarify the BA.