Wenaha–Tucannon Wilderness
| Wenaha–Tucannon Wilderness | |
|---|---|
Summit of Oregon Butte | |
| 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°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.