2011 Map of Lone Rock Creek

About this map

Rock Creek and its many tributaries, including the winding Lone Rock Creek, carve a complex drainage system through this high-plateau landscape of Gilliam County. Early 21st-century ranching life is centered on landmarks such as the Murtha Ranch in the northwestern corner, tucked near Bruce Hollow. The map reveals a topography defined by steep-walled canyons and ridges, where the Needle Fork and Lob Fork meet in the lower elevations. The road network is sparse, with Lonerock Rd and Hail Ridge Rd providing the primary access through the broken terrain. Significant elevation changes are marked by Pine Ridge to the southwest and numerous named draws like McPherson Canyon and Sweetmilk Canyon, which demonstrate the intricate natural irrigation and erosion patterns of the Oregon backcountry before they reach the East Fork Thirtymile Creek drainage.