2011 Map of Twelvemile Ridge

About this map

Twelvemile Ranch serves as a lone outpost in this southeastern Malheur County landscape, situated at the junction of Enchave Ranch Rd and Whitehorse Rd. The high desert geography is dominated by drainage systems and prominent volcanic or tectonic rises, most notably Twelvemile Ridge and Three Man Butte to the east. Several intermittent watercourses, including Twelvemile Creek and Duck Creek, carve through the terrain, illustrating the seasonal hydrology of the region. Transportation in the early 21st century remains tied to a sparse network of ranch roads like Crooked Creek Range Rd. The presence of the Twelvemile Hill Grade indicates the challenging elevation changes encountered by those navigating this remote high-plateau environment.