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1967 Map of Grassy Mtn

Name: 1967 Topographic Map of Grassy Mtn
Creator: U.S. Geological Survey
Published: 1971
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1971

About this map

Grassy Mountain anchors this high-desert landscape in Malheur County, where 1960s ranching and water management are clearly evident through a network of springs and reservoirs. The terrain is defined by rugged volcanic formations such as Shell Rock Butte and Haystack Rock, interspersed with isolated water sources like Lowe Spring and Mendiola Spring. These named springs, often the only reliable water for miles, indicate the vital points of human and livestock activity in the arid basin.

The eastern edge of the quadrangle is dominated by the Owyhee River and the northern reaches of Lake Owyhee, including the protected lands of Lake Owyhee State Park. Topographic details reveal the complex drainage patterns of Kern Basin and Sagebrush Gulch, while man-made improvements like Oxbow Reservoir and a Gaging Station near the river illustrate the ongoing efforts to harness the region's limited water supply during the mid-20th century.