The Colorado River is one of the principal rivers in the Southwestern United States and in northern Mexico. The 1,450-mile-long river, the 5th longest in the United States, drains an expansive, arid w
The Colorado River at Horseshoe Bend, Arizona, a few miles below Glen Canyon Dam
Headwaters of the Colorado River in Rocky Mountain National Park, Colorado
Colorado River in the Grand Canyon seen from Pima Point, near Hermit's Rest
Colorado River as it exits the United States into Mexico beneath the San Luis Colorado-Colonia Miguel Alemán Bridge (September 2009)
The Green River is a 730 mi long river located in the western U.S. states of Wyoming, Utah, and Colorado. The chief tributary of the Colorado River, its watershed, the Green River Basin, begins in the
The Green River near Canyonlands National Park
Upper Green River, Wyoming
The Green River flows through Split Mountain Canyon before leaving Dinosaur National Monument in a meandering path across a broad irrigated flood plain
Green River, Wyoming, by Thomas Moran, 1878