The Green River Headwaters rise at elevations of 13,400ft in the Wind River Range of Wyoming. Flowing south, the river drain’s nearly 50,000sq miles of Wyoming, Utah and Colorado before joining its sister, the Colorado in Canyonland’s National Park. The river's total distance of 730 miles is nearly twice that of the Colorado and drops no less than 9000ft. The Green is an exotic high desert river made famous in the American ethos by Native Tribes, beaver pelts and Major John Wesley Powell. The Green in many ways is the true master stream of the Colorado River Basin.