The Targhee National Forest covers approximately 1.8 million acres (this includes the portion of the Caribou National Forest which is administered by the Targhee). The majority of the forest lies in eastern Idaho and the remainder in western Wyoming. Situated next to Yellowstone and Grand Teton National Parks, the forest lies almost entirely within the Greater Yellowstone Ecosystem.
United States Department of Agriculture, Forest Service, "Record of Decision Final Environmental Impact Statement (FEIS) for the Revised Forest Plan, Targhee National Forest" (1997). Record of Decisions (ID). Paper 2.