6027 - Laserfiche WebLink

Home Browse Search

above the mouth of the Yampa River (RM 345 (RK 352)) is strongly influenced by releases from Flaming Gorge Dam (constructed in 1963) and no longer supports endangered fish populations. Below the Green and Yampa River Confluence, the Green River enters Whirlpool Canyon, a section with deep eddies and steep, boulder-strewn cliff a. The Green River leaves Whirlpool Canyon and meanders through cottonwood vegetated sand/cobble shorelines in Island Park and Rainbow Park until it enters Split Mountain Canyon at RM 327 (RK 523). During its passage through Split Mountain, the Green River passes through several large boulder fields which create four mayor rapids. The river exits Split Mountain Canyon and DNM at RM 319 (RK Slp) and enters the agricultural valley of the Uintah Basin, where the river becomes very broad, shallow and flat. The Green River flaws through different geologic formations and its flow is increased by several tributaries as it proceeds to its mouth. Leaving DNM, the Green River flows into the Uintah Basin, an open valley underlain by rocks dipping south from the Uintah Mountains. The Duchesne River, which drains the southern slope of the Uintah Mountains, enters the Green River near Ouray, Utah. The White River enters below the mouth of the Duchesne, having its headwaters on the western slope of the Rocky Mountains. Below these principle tributaries, the Green proceeds 193 km (120 mi) through Desolation Canyon, a deep Canyon of intertonguing Wasatch and Green River formations} and Gray Canyon, formed from several complex formations. Desolation Canyon, slicing through the Tavaputs Plateau, consists of nearly 50 riffles and rapids which gradually increase in their size as the river flows through Wasatch and Green River formations of Tertiary age. Gray Canyon contains larger and deeper rapids and deeper pools as it cuts through Mesa Verde group formations of cretaceous rocks, and ends abruptly at the Book Cliffs escarpment. The Price 7