Green River information

The Green River, located in the western United States, is the mainstream (or parent) river of the Colorado and Little Colorado River tributary system that eventually flows through the Grand Canyon and out into the Gulf of California. The Green River itself is 730 mi (1,175 km) long. The Green River Basin covers parts of Wyoming, Utah, and Colorado. The headwater of the river begins in the Wind River Mountains of Wyoming, and flows through Utah for much of its course, draining the northeastern portion of the state while looping for 40 mi (64 km) into western Colorado. Much of its route is through the Colorado Plateau, some of the most spectacular canyons in the United States. Before its confluence with the Colorado River, it is larger with a mean discharge of 10,150 ft³/s (287 m³/s). The Colorado then converges with the larger Green River and together these two rivers and a multitude of smaller tributaries drain the western side of a 500-mile-long section of the Rocky Mountains. After the Green River converges with the Colorado it is no longer referred to as the Green River, and both are then called the Colorado River for the remainder of its course and eventual drainage into the Gulf of Mexico. (...) more....

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