2020 Map of Twelvemile Ridge

About this map

Twelvemile Ridge and the prominent Three Man Butte define the high-desert character of this corner of Malheur County. The map shows a landscape shaped by drainage systems such as Duck Cr and Twelvemile Cr, where seasonal water courses have carved distinct topographical patterns into the terrain. Human presence is marked by a network of ranching and access roads, including Whitehorse Rd and Echave Ranch Rd, which navigate the elevation changes along the Twelvemile Hill Grade. This 2020 survey illustrates the contemporary connectivity of the region through the Whitehorse Cutoff and Crooked Creek Range Rd, providing a clear record of the modern infrastructure serving these remote high-elevation plains.