The Green River is the largest and most important tributary of the Colorado River System. It’s watershed, known as the Green River Basin, covers parts of Wyoming, Utah, and Colorado. Originating in the glaciers of the Wind River Mountains of Wyoming and 
flowing throughout the length of Utah, the 730 mile long Green River accounts for 40% of inflow into Lake Powell.
The riparian zones along the length of the Green River provide habitats for uncounted numbers of species of flora and fauna. The waters of the Green provide the precious lifeblood for these species as well as the agriculture industry that runs the lengths of its banks and the recreation industries that navigate its waterways.
The Green River is home to some of the most spectacular canyons in the western United States. Below Flaming Gorge dam, which hosts some the best trout fisheries in the United States, the river canyons of Lodore, Split Mountain, Desolation, and Labyrinth provide endless sources of recreation to scores of boaters, campers and fisherpeople.
