2011 Map of Donkey Creek

About this map

Summit Ranch stands as a central landmark in this high-altitude valley of Custer County, Idaho, where water management is the primary driver of the local landscape. The drainage of Donkey Creek and Summit Creek defines the basin, supported by the engineering of the Summit Dam and its accompanying Summit Reservoir. These features suggest a ranching and agricultural economy dependent on seasonal snowmelt and spring-fed sources like Graves Spring. High mountain drainages, including Bear Creek and Snowslide Creek, descend from the surrounding peaks toward the valley floor. Transportation is limited to functional routes such as Goldburg Rd and Pahsimeroi Rd, which connect the remote ranching outposts and provide access through the significant terrain features of Big Gulch and Cooney Canyon.