Wenaha–Tucannon Wilderness
| Wenaha–Tucannon Wilderness | |
|---|---|
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IUCN category Ib (wilderness area)
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Summit of Oregon Butte
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| Location | Wallowa County, Oregon and Columbia / Garfield / Asotin counties, Washington, United States |
| Nearest city | Milton-Freewater, Oregon and Walla Walla, Washington |
| Coordinates | 45°59′59″N 117°46′00″W / 45.99972°N 117.76667°WCoordinates: 45°59′59″N 117°46′00″W / 45.99972°N 117.76667°W |
| Area | 177,423 acres (71,801 ha) |
| Established | 1984 |
| Governing body | U.S. Forest Service |
The Wenaha–Tucannon Wilderness is a federally designated wilderness area in the Blue Mountains of northeastern Oregon, and southeastern Washington, United States. It was created by the Endangered American Wilderness Act of 1978 and encompasses 177,423 acres (71,801 ha) in the Umatilla National Forest — 66,375 acres (26,861 ha) in Oregon and 111,048 acres (44,940 ha) in Washington.
The Wehana–Tucannon Wilderness consists primarily of rugged basaltic ridges separated by deep canyons with steep slopes. The area's precipitation drains south into the Wenaha River, east to the Grande Ronde River and Asotin Creek, and north into the Tucannon River, each part of the Snake River watershed. To the west drainages are the Touchet River and Mill Creek, both leading to the Walla Walla River, and the Umatilla River, a direct tributary of the Columbia River. The Wilderness ranges in elevation from 2,000 feet (610 m) on the Wild and Scenic Wenaha River to 6,401 feet (1,951 m) atop Oregon Butte at 46°06′38″N 117°40′47″E / 46.1105°N 117.6797°E in Washington.
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