Boise National Forest
![A photo of mountains and Indian paintbrush in Boise National Forest](/Images/godic/202501/01/Boise_National_Forest_101538.jpg")
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![A hydraulic jet being used to mine placers in the Boise Basin in 1929](/Images/godic/202501/01/Boise_NF_Mining_19291538.jpg")
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Boise National Forest is a federally protected area covering 2,203,703 acres (8,918.07 km) of the U.S. state of Idaho as part of the national forest system. Created on July 1, 1908 from part of Sawtooth National Forest, it is managed by the U.S. Forest Service as four units: the Cascade, Emmett, Lowman, and Mountain Home ranger districts.