1985 Map of O'Brien Hill

About this map

O'Brien Hill dominates the central landscape of this high plains region, situated where the borders of several Montana counties converge. Compiled from 1977 aerial photography, the map reveals a rugged drainage network defined by the paths of Fish Creek, Rock Creek, and Simmons Creek. In the southern reaches, the winding course of Van Winkle Creek cuts through the terrain near the junction of Golden Valley and Stillwater counties. This provisional edition is characterized by its focus on topographic detail and water distribution across the ranching country, noting the precise location of numerous wells and springs that are vital to this semi-arid environment. The absence of major settlements highlights the land's utility for resource extraction and grazing during the late twentieth century.