40 CFR § 81.410 - Idaho.

Area name	Acreage	Public Law establishing	Federal land manager
Craters of the Moon Wild	43,243	91–504	USDI-NPS
Hells Canyon Wild 1	83,800	94–199	USDA-FS
Sawtooth Wild	216,383	92–400	USDA-FS
Selway-Bitterroot Wild 2	988,770	88–577	USDA-FS
Yellowstone NP 3	31,488	( 4)	USDI-NPS

1 Hells Canyon Wilderness, 192,700 acres overall, of which 108,900 acres are in Oregon and 83,800 acres are in Idaho.

2 Selway Bitterroot Wilderness, 1,240,700 acres overall, of which 988,700 acres are in Idaho and 251,930 acres are in Montana.

3 Yellowstone National Park, 2,219,737 acres overall, of which 2,020,625 acres are in Wyoming, 167,624 acres are in Montana, and 31,488 acres are in Idaho.

4 17 Stat. 32 (42nd Cong.).