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1980 Map of Twin Buttes

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

USGS Topo · Published 1980

About this map

Jackass Creek flows through this high-desert landscape in Harney County, illustrating the vital role of water management in eastern Oregon's interior during the late 20th century. The terrain is defined by the steep elevation changes of Black Rim and the namesake Twin Buttes, which serve as prominent landmarks in an otherwise open expanse.

A network of specialized water sources, including the Mammoth Waterhole, Tooney Waterhole, and On the Rim Waterhole, underscores the importance of this area for livestock and local land use. These features, alongside larger impoundments like Long Canyon Reservoir and Horseshoe Reservoir, reveal a carefully mapped system of resource distribution across Weed Lake Flat and the surrounding drainage basins. The presence of numerous named catchments, such as Larrys Reservoir and Dunn Reservoir, provides specific locations for researchers and genealogists interested in the history of local ranching and land tenure.