What evidence have archaeologists found that indicates Northwest Coast peoples used dugout canoes?

Question

Quizplus · Accepted Answer

Woodworking tools and harpoon technology suggest that Northwest Coast peoples were skilled at working with wood, which would have been necessary to create dugout canoes. Perfectly preserved canoes would be rare to find in archaeological sites since they would have decayed over time. Tree harvesting sites are important, but alone they do not provide evidence that the trees were used for making canoes. Bone arrowheads are unrelated to the use of dugout canoes.

What Evidence Have Archaeologists Found That Indicates Northwest Coast Peoples