BOISE (KTVB) -- Federal officials say a 150-square-mile area in southwestern Idaho will serve as a public lands sanctuary for non-reproducing wild horses from around the West that have nowhere else to go.

The U.S. Bureau of Land Management on Monday announced the release of its approved Resource Management Plan for the Jarbidge Field Office.

BLM Project Manager Heidi Whitlach says the wild horse herd in the Saylor Creek Herd Management Area will be sterilized and kept between 50 and 200 horses.

She says the herd will be replenished with wild horses from Idaho and other states.

The 72-page plan guides management of everything from wild horses to cattle grazing to recreation to sage grouse habitat restoration on the 2,200-square-mile Jarbidge Field Office that contains desert canyons and remote rangelands.