Minerals included Year-round maintained roads for access 7.3 miles south of the town of Sentinel Butte Call Southwest Water Authority for service (701-225-0241), Goldenwest Electric Co-op (406-796-2423) and RTC Telecommunications (701-872-4300) Directions: 7.3 miles south of Sentinel Butte. Turn south on West St by Sentinel Butte City Hall, continue south (it's called County Road 11 when outside of city limits) and follow the curves.Property located at the intersection of County Road 11 and Garner Creek Road.