The area of Chuck River Wilderness is 300.673 square kilometers.
Chuck River Wilderness was created in 1990.
The area of Owyhee River Wilderness is 1,081.838 square kilometers.
The area of Encampment River Wilderness is 40.97 square kilometers.
The area of Platte River Wilderness is 96.89 square kilometers.
The area of Endicott River Wilderness is 399.542 square kilometers.
The area of Boulder River Wilderness is 196.977 square kilometers.
Ghost River Wilderness Area was created in 1967.
The area of Salt River Canyon Wilderness is 129.908 square kilometers.
The area of Hassayampa River Canyon Wilderness is 47.915 square kilometers.
The area of Upper Kiamichi River Wilderness is 39.473 square kilometers.
The area of Rock River Canyon Wilderness is 18.777 square kilometers.
Frank Church - River of no Return Wilderness Area.Gospel Hump Wilderness Area.Hells Canyon Wilderness Area.Sawtooth Wilderness Area.Selway-Bitterroot Wilderness Area.