2018 Map of Arc Dome

Water sources are vital markers in this arid environment, defined by the headwaters of the Reese River and numerous drainages such as N Twin River and S Twin River. The presence of the South Twin Pasture and various named canyons, including Sheep Canyon and Battero Canyon, suggests a history of high-country grazing and seasonal navigation. This survey provides a precise look at the drainage patterns and peaks that define the Great Basin high country.