Mt. Adams area is administered by the Mt Adams Ranger District. This area is located in the eastern portions of Gifford Pinchot National Forest in southwest Washington, and comprises 367,000 acres. This area includes Mt. Adams Wilderness, Indian Heaven Wilderness and Trapper Creek Wilderness.
The Lewis River Recreation Area is within Mt. Adams Ranger District. The Lewis River Recreation Area is a 14-mile corridor, situated alongside the Lewis River and Forest Road 90 within the Gifford Pinchot National Forest. This popular recreation area is located 26 miles east of Cougar, and 29 miles west of Trout Lake, WA. This area provides access to the popular Lewis River Trail #31, and associated waterfall viewing. Advanced reservations via Recreation.gov are required daily during the busy visitor season from June 15 through September 30.
Mt. Adams is a prominent landmark in the area. Elevations here range between 1200 feet at the Wind River Work Center, 12 miles north of Carson, WA., and 12,276 feet at the summit of Mt. Adams. Precipitation varies from 70.7 inches of rain and 65.1 inches of snow at the Wind River Work Center and 44.1 inches of rain and 95.7 inches of snow at the Mt. Adams Ranger District office in Trout Lake, WA. The area features a great diversity of habitats and features, from old growth to second growth forest, wetland areas, low and high elevation meadows, glaciers, and low and high elevation lakes.