HACKBERRY CREEK (Briscoe County). Hackberry Creek rises in northern Briscoe County (at 34°44' N, 101°10' W) and runs southeast for nine miles to its mouth on the Prairie Dog Town Fork of the Red River (at 34°37' N, 101°01' W). Near the creek's headwaters is the site of the old Woodburn Camp, one of twelve winter camps on the JA Ranch. The creek traverses an area of moderately steep slopes with locally high relief, surfaced by shallow to moderately deep silt loam soils that support mesquite and grasses.