2020 Map of Lone Rock Creek

About this map

Lone Rock Creek and its complex network of tributaries, including Needle Fork and Lob Fork, carve through this high desert terrain on the boundary of Gilliam and Morrow counties. The landscape is defined by its deep drainage patterns, with significant features like McPherson Canyon and Lyons Canyon shaping the local topography. This region is marked by a network of ridge-top roads, such as Hale Ridge Rd and Lone Rock Rd, which follow the natural contours of the land to connect the various valleys. In the northwest, Bruce Hollow provides a distinct break in the elevation, while Pine Ridge stands as a prominent high point in the southwest corner. The drainage of E Fork Thirtymile Creek further illustrates the intricate watershed system that defines this part of the Oregon interior.