High Quality Content by WIKIPEDIA articles! The Flaming Gorge Dam is a concrete thin-arch dam in the Flaming Gorge of the Green River, a major tributary of the Colorado River, in the U.S. state of Utah. One of the largest dams in the American West, Flaming Gorge Dam forms the Flaming Gorge Reservoir, which extends 91 miles (146 km) into southern Wyoming, submerging four distinct gorges of the Green River. The dam stores water for the Colorado River Storage Project, which stores and distributes upper Colorado River Basin water. The dam`s hydroelectric power plant generates 151.5 MW.