White River National Forest is a National Forest in northwest Colorado. It is named after the White River that passes through its northern section. It is the most visited National Forest in the United States, primarily from users of the twelve ski areas within its boundaries.The forest contains 2,285,970 acres (3,571.8 sq mi, or 9,250.99 km²). In descending order of land area it is located in parts of Eagle, Pitkin, Garfield, Summit, Rio Blanco, Mesa, Gunnison, Routt, Moffat counties.The White River national forest provides significant habitat for deer, elk, mountain sheep, mountain goat, bear, mountain lion, bobcat, lynx, moose, raptors, waterfowl, trout and many other species of wildlife.The forest contains 1,900 mi. (3,058 km) of forest system roads, 2,500 mi (4,023 km) of trails, and the Dillon, Green Mountain, Ruedi, and Homestake reservoirs.