2020 Map of John Day Mountain

About this map

Nez Perce National Forest dominates this Idaho County landscape, where the drainages of the John Day Creek and Allison Creek systems carve through high-elevation terrain. Central to the topography is John Day Mtn, a prominent peak surrounded by a network of forest development roads, including the Nut Basin Rd and Natl Forest Develop Road 9300 Rd. These routes provide access to the remote backcountry, connecting landmarks like Arrison Ridge and Slate Point. The area's hydrology is characterized by numerous seasonal and perennial gulches such as Bear Gulch and Jewett Gulch, while high-altitude features like Nut Basin Lake and Martin Spring suggest the importance of water sources in this steep environment. This survey provides a modern view of the land as of 2020, documenting the complex system of ridges and basins that define this portion of the Idaho wilderness.