There was talk about piping Columbia River water through a pipe in the Pacific Ocean to SO CA back in the 1970s, to many environmentalists started screaming and protesting and threatening lawsuits so it got drop.
I have to cross the Columbia River to go to Washington to visit family or go racing up there, it is big and carries a lot of water into the ocean work I'm not sure how much of the water in the Columbia drains out of Canada, I know a lot of the water in the Columbia drains out of Idaho, Washington and Oregon.
The Snake River Gorge reminds me of the Grand Canyon, not as long or probably not as deep either whistling grin
The power of water flowing bow

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)