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1966 Map of Gilmore Hill

Name: 1966 Topographic Map of Gilmore Hill
Creator: U.S. Geological Survey
Published: 1970
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1970

About this map

Whistle Creek and its many tributaries, including the North Branch West Branch Whistle Creek, define this portion of the Bighorn Basin. In the mid-1960s, the landscape was a mix of drainage systems and early water management infrastructure. The Wiley Canal cuts across the southern edge of the map, illustrating the human effort to divert water for agricultural use in this arid region of Park County.

Evidence of range life is scattered throughout the terrain, from a lonely Corral near Gilmore Hill to a long-established Pack Trail that crosses the creek bed. The presence of the Whistle Creek Reservoir and various tanks suggests a focus on livestock watering and moisture retention. The mapping, performed by the Geological Survey using 1965 aerial photography, captures the intricate network of draws like Red Point Draw and the subtle location of a Spring that served as vital water sources for local ranching operations.