Green River

Green River, city, seat (1875) of Sweetwater county, southwestern Wyoming, U.S., 13 miles (21 km) west of Rock Springs. Surrounded by rock formations at an elevation of 6,600 feet (2,000 metres), it originated on the bank of the river for which it is named as a trappers’ rendezvous and a stop on the overland stage route. The city became a distribution point after the arrival in 1868 of the Union Pacific Railroad and was later...