Drainage Question

Dorado

Well-Known Member
#4
Yellowstone and Grant Teton are the headwaters of the Snake River, the largest tributary of the Columbia River.

It has almost 3X the discharge of the entire Colorado River.....
 

PBH

Well-Known Member
#5
the South Fork of the Snake River flows from Jackson Lake to Palisades, then down to the confluence of the Henry's Fork near Rexburg (excellent trout fishery!). It then flows west across Idaho turning north past Boise, to Lewiston and into Washington where it joins the Columbia at Kennewick.
https://upload.wikimedia.org/wikipedia/commons/f/f5/SnakeRiverNicerMap.jpg


The Green River drainage is on the other side of the mountains (east) from Jackson in the Wind River mountains.
https://upload.wikimedia.org/wikipedia/commons/5/54/Greenutrivermap.png

https://www.lib.utexas.edu/maps/us_2001/wyoming_ref_2001.jpg

http://francistapon.com/images/travels/cdt/cdt_map_large.jpg