In 1971, wild horses and burros were found roaming across 53.8 million acres of Herd Areas (HAs), of which 42.4 million acres were under the BLM's jurisdiction. Today the BLM manages wild horses and burros in subsets of these HAs, known as Herd Management Areas (HMAs) that comprise 31.6 million acres, of which 26.9 million acres are under BLM management.
The Sands Basin HMA is located about 13 miles southwest of Homedale, Idaho. HMA characteristics include rolling sagebrush steppe and steep, rough terrain. The Sands Basin horses share the area with native wildlife, such as deer, antelope and upland game birds.
The last gather occurred in August-September 2015.