|The Chief Joseph Wildlife Area totals 25,037 acres and is managed in four units: 4-O Ranch, Chief Joseph, Grouse Flats and Shumaker.
The wildlife area is in the southeast corner of the state in Asotin and Garfield counties, and is about 30 miles south of the town of Asotin. The eastern border is less than a mile from the Snake River, and three of the units border the Grande Ronde River. Elevations range from 825 feet along Joseph Creek up to 4,913 feet at Mt. Wilson, the highest point in the vicinity. These drainages provide habitat for Chinook salmon, summer steelhead, and bull trout, although high temperatures affect water quality and may influence fish presence, particularly bull trout.
The main acquisition was in 1974 for enhancing bighorn sheep, mule deer, and upland game bird populations. Since then, bighorn sheep have been reintroduced, along with turkey and pheasant. Large populations of California quail exist, along with blue and ruffed grouse, Hungarian partridge, and chukar. Over 100 species of birds have been identified, including a remnant population of mountain quail. Horseback riders, hikers, and bird watchers commonly make use of trails. The 4-0 Ranch acquisition was completed in 2016.