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1990 Map of South Mountain
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1990 Map of South Mountain

USGS Topo · Published 1990

About this map

South Mountain dominates this portion of Malheur County, where the high desert landscape is defined by its vital water management systems and remote livestock ranching. The Malheur River cuts through the southern terrain, flanked by grazing lands like Hinkle Ranch and Perry Ranch. This 1990 provisional update shows a network of upland water sources essential for cattle and wildlife, including South Mtn Reservoir, Alfred Reservoir, and Tub Springs Reservoir. Narrow drainage systems like Black Canyon and Simmons Gulch illustrate the complex topography surrounding Hog Ridge. Scattered springs such as Coyne Spring and Gold Spring provide small, reliable water points in a territory where the South Fork Cottonwood Creek and Hog Creek shape the descent from the mountain peaks toward the river valley.

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Map Details

Date Portrayed1990
Date Published1990
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions21.9 x 26.8 inches

Editions of this 1990 South Mountain Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of Malheur County Through Time

374 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain