This project is the design and construction of a structure to correct a 33% passable fish passage barrier culvert, #127H0049, at the mouth of Damon Creek at road mile 2.05 on Kirkpatrick Road north of Copalis Crossing, Washington. Damon Creek is in the Lower Humptulips Subbasin, flowing into the lower mainstem Humptulips River at river mile 10.3. The goal is to remove the barrier and replace it with a structure that is passable to all aquatic species and life stages in order to open full migration to 5.82 miles of high-quality spawning and rearing habitat in forestlands upstream. Six species of salmonids present in the Humptulips River will benefit from the improved habitat conditions in Damon Creek including coho, Chinook, chum, steelhead, cutthroat, and bull trout. The project will also improve the existing boat ramp just downstream from the culvert to provide safer recreational fishing and boating access to the Humptulips River.