Re: Yellowstone or Wind River
How about going to 'Google Earth', zooming in and getting the overhead view of both places!
I recently did this and followed the Snake River from it's headwaters all the way to Idaho Falls, and The Henrys' Fork from Big Springs all the way to the confluence with the Snake.
"I've never missed a Steelhead by waiting too long. It's true, but I've missed plenty trying to set the hook too quickly." Dec Hogan 'A Passion For Steelhead'