Grassy Knob Wilderness

Grassy Knob Wilderness

The United States Congress designated the Grassy Knob Wilderness in 1984 and it now maintains 17,159 acres.

Covered in a tangled rain forest of coniferous evergreens thick with an ankle-grabbing understory, Grassy Knob Wilderness lies rugged and steep. Access is limited and off-trail hiking rates as an extremely rough experience. Elevations vary from almost sea level to more than 2,000 feet on summits that include Grassy Knob (2342’) on western boundary of the wilderness. The Wild and Scenic Elk River outlines the southern boundary of the area.

This terrain provides habitat for Port Orford cedar, drooping with its characteristic twisting limbs in rare stands of old growth with some trunks exceeding six feet in diameter. The primary drainage of Dry Creek provides habitat for a healthy population of spawning salmon. Many small turbulent streams tumble for short distances over waterfalls and through ravines cool with shade during typically hot summers. In autumn the red leaves of the vine maples highlight moss-laden glens. Winter brings an average of 130 inches of rain born in the nearby Pacific. Weather changes may be remarkable and rapid.

Please follow special wilderness regulations outlined below and use Leave No Trace techniques when visiting the Grassy Knob Wilderness to ensure protection of this unique area.

At a Glance


Nation-wide Wilderness Regulations:

  • Motorized equipment and equipment used for mechanical transport is prohibited. This includes the use of motor vehicles, motorboats, motorized equipment, bicycles, hang gliders, wagons, carts, portage wheels, and the landing of aircraft including helicopters.

Rogue River-Siskiyou National Forest Grassy Knob Wilderness Regulations:

  • Caching of equipment is prohibited. Storing equipment, personal property, or supplies is prohibited.
  • Possessing or storing hay or unprocessed (viable) grain is prohibited. Oregon weed free forage information.
  • Maximum group size: Overnight use of the area by a group of more than 12 persons and/or 9 saddle or pack animals is prohibited. Note: This does not apply to day-use.
Closest Towns:
  • Powers, OR
  • Port Orford, OR
Information Center: Powers Ranger District

General Information


Trailheads that access Grassy Knob Wilderness

Grassy Knob Trailhead – provides access to Grassy Knob Trail #1241.


Topo maps

Father Mountain, Mt. Butler, Port Orford, Sixes. Download free U.S. Forest Service Topo maps.

Go to for online maps and other important Wilderness information.


Day Hiking


Recreation Areas

Recreation Activities