LOST CREEK (CYCLONE RIM) HERD MANAGEMENT AREA, WYOMING
The Lost Creek HMA encompasses 250,000 acres, of which 235,000 acres are BLM-administered public lands. The HMA lies within the Great Divide Basin, a closed basin out of which no water flows. Some desert playa and vegetated dune areas are interspersed throughout the HMA. Several sensitive desert wetland riparian areas occur throughout the area, including both intermittent and perennial lakes and streams. Elevation ranges from 6500 to 6800 feet. Winters are long and severe. Annual precipitation averages a little less than six inches. The Lost Creek HMA is joined on the east by the Stewart Creek HMA, on the north by the Antelope Hills HMA, and on the west by the Divide Basin HMA.
The AML for this HMA is 70 horses. A full range of colors is present. The present population has been influenced by the routine escape of domestic saddle stock from the surrounding populated areas. The horses range from 14 to 15 hands and 800-1000 pounds mature weight. Genetic testing on horses in the Lost Creek HMA shows them to be closely identified with the Spanish Mustang breed.