:I've looked into this before, and it seems that only three rivers pass completely through the Cascades: Columbia, Klamath, and Pit. The Cascades end before reaching the Fraser, as the BC people have adamantly pointed out on various pages. I thought I had made sure the river pages involved all had the same info, but perhaps I missed the Columbia.. or someone changed it. As far as I can tell there is little controversy about it, just some misinformation floating around.