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1980 Map of Grassy Hills

Name: 1980 Topographic Map of Grassy Hills
Creator: U.S. Geological Survey
Published: 1980
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1980

About this map

The House Creek Ranch and various water management features define this high-elevation landscape along the border of Owyhee and Twin Falls Counties. In 1980, this region relied on a series of specialized crossings and small reservoirs to navigate the drainages of the Grassy Hills. Significant landmarks include the Bengeochea Crossing and Marshall Butte Crossing, which indicate historical movement patterns across Devil Creek.

Water storage is central to the area's geography, with the Worley Reservoir, Little Grassy Reservoir, and several numbered basins like Grassy Hills Reservoir No 3 scattered across the terrain. These man-made improvements, alongside The Windmill, speak to the ranching infrastructure required in this arid corner of southern Idaho. The map also traces the winding courses of Camas Creek and Deadwood Creek, while Signal Butte provides a prominent natural reference point.