Roaring Fork River
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The Roaring Fork River is a tributary of the Colorado River, approximately 70 mi (113 km) long, in west central Colorado in the United States. The river drains a populated and economically vital area of the Colorado Western Slope called the Roaring Fork Valley, which includes the resort city of Aspen and the resorts of Aspen/Snowmass.
It rises in the Sawatch Range in eastern Pitkin County, on the west side of Independence Pass on the continental divide. It flows northwest past Aspen, Woody Creek, and Snowmass. It receives the Fryingpan River at Basalt. One mile below Carbondale, it receives the Crystal River from the south. It joins the Colorado in Glenwood Springs. The river flows through canyons along most of its route and is a popular destination for recreation whitewater rafting. The river supplies water through the Sawatch Range to the Twin Lakes Reservoir via the Twin Lakes Tunnel.