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Mount Thielsen Wilderness

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General Information

Description - The Mount Thielsen Wilderness covers 55,100 acres and is located on the Umpqua, Winema, and Deschutes National Forests. Much of the wilderness consists of high alpine forests and open park-like dry meadows. An ancient volcanic ridge dominated by 9,182 foot Mount Thielsen, the "Lighting Rod of the Cascades", forms the backbone of this area.

Attractions - This wilderness features the 9,182 foot "Lighting Rod of the Cascades" Mount Thielsen. In addition, there are numerous trails, including a portion of the Pacific Crest National Scenic Trail #2000, lakes and creeks for visitors to enjoy. Miller Lake borders the east side of the wilderness and features the Digit Point Campground. Other features include Mule Peak, Miller Mountain, Clover Butte, Cappy Mountain, Howlock Mountain, and Timothy Meadows.

Recreation - Activities include hiking, horseback riding, camping, fishing and backpacking.

Climate - Climate on the Umpqua changes with elevation. The area receives a high amount of precipitation. Much of the precipitation comes from October to April in the form of rain at the low elevations and as wet heavy snow in the higher elevations. Although snow is possible in the lowest elevations, it is infrequent. Much of the Umpqua National Forest is at the 3000-4000 foot elevation and averages about 60 inches of rain per year. Late spring, summer and early autumn tend to bring clear, sunny days with moderate temperatures.

Location - The Mount Thielsen Wilderness is located in the eastern portion of the Umpqua National Forest and northwestern corner of the Winema National Forest in the Chemult Ranger District. From the Umpqua, it may be accessed from Roads 4793-100 and 9772. From the Winema it can be accessed via Forest Road 9772.

Current Conditions & Trip Reports

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More Information

Contact Information:
Diamond Lake Ranger Station, 2020 Toketee RS Rd , Idleyld Park, OR, 97447, Phone: 541-498-2531, Fax: 541-498-2515

Additional Information:
Chemult Ranger District -
Diamond Lake Ranger District - The Diamond Lake Ranger District encompasses the eastern portion of the Umpqua National Forest and includes the Boulder Creek, Mount Thielsen and a portion of the Rogue-Umpqua Divide wildernesses.


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