The Umpqua Divide Wilderness map actually contains the maps
of Boulder Creek Wilderness, Rogue-Umpqua Divide Wilderness,
Mount Thielsen Wilderness and the Oregon Cascades Recreation
Area.
Boulder Creek Wilderness
This 19,100 acre Wilderness encompasses a high elevation
tributary of the North Umpqua River. Boulder Creek is an
important spawning stream for anadromous fish. A wide
variety of wildlife, geologic formations, and plants can
be found in this rugge drainage. Wildfires in 1996 and
2008 burned much of the Boulder Creek Wilderness. Hikers
should expect hazards in the area such as, but not limited
to, falling trees or dead snags, loose rocks, and trail
tread instability.
Rouge-Umpqua Divide Wilderness
High, forested mountains and ridges separate the Upper
Rogue and North Umpqua River drainages and characterize
this 33,000-acre Wilderness. Located on the western slopes of
the Cascades, the larget portion of the Wilderness lies on
the Umpqua National Forest. The eastern edge of the Wilderness
lies in the Rogue River-Siskiyou National Forest. Flora
and fauna are impressive attractions in thie area, as are
geologic features such as Devils Slide, Hole-in-the-Ground,
and Fish Mountain.
Mount Thielsen Wilderness
Portions of this 55,100-acre Wilderness are located on the
Umpqua, Deschutes, and Fremont-Winema 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, forms the backbone
of this area.
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