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Green River

 
Length: 730 miles (1,175 kilometers)

Rising in the Green River Lakes near the Continental Divide, Sublette co., W Wyo., and flowing generally S through W Wyo., NW Colo., and E Utah to the Colorado R. in Canyonlands Natl. Park, SE Utah. It is the largest tributary of the Colorado. Most of its course flows through deep canyons, including Canyon of the Lodore in Dinosaur Natl. Monument. The White, Yampa, and San Rafael rivers are its main tributaries. The Colorado R. storage project of the U.S. Bureau of Reclamation has extensively developed the Green R. basin for irrigation, mining, and hydroelectric power; Flaming Gorge Reservoir (Utah/Wyo.) is the major unit in this project (surrounded by Flaming Gorge Natl. Recreation Area). Fontenelle Reservoir, formed in W Wyo., is the only other project unit on the Green.

GREEN RIVER LAKES
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    Full Pool: 6,040.0 MSL     Area: 43,820 Acres

Outflows of the Green River
Colorado River