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1979 Map of Grasmere Reservoir

Name: 1979 Topographic Map of Grasmere Reservoir
Creator: U.S. Geological Survey
Published: 1980
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1980

About this map

Grasmere Reservoir and the high desert landscape of Owyhee County define this late 1970s topographic record. The map reveals an area where water management and ranching represent the primary human footprints, anchored by the Hart Ranch and Tindall Ranch. A network of unpaved infrastructure, including an extensive system of Jeep Trails and a designated Grasmere Landing Strip, connects these isolated outposts across the high plains.

Significant landmarks like the Rattlesnake Basin and The Saddle provide geographic context for several natural water sources such as Nit Springs, Roll Inn Spring, and Cave Spring. The presence of Ruins near Crab Creek suggests earlier cycles of settlement or industry in this arid environment, while active Gravel Pits and a Quarry indicate the ongoing extraction of local resources at the time of the survey.