2013 Map of Patterson

About this map

Patterson sits at the foot of the Lemhi Range on this 2013 Idaho survey, where the mountain slopes meet the wide floor of the Pahsimeroi Valley. This area is defined by its dramatic elevation changes, transitioning from the high peaks of the Challis National Forest down to the drainage of Patterson Cr and its tributaries. Local transportation is centered on Pahsimeroi Rd and Wallis Ln, which serve the small settlement and surrounding agricultural lands. The map details the intricate canyon systems carved by Mahogany Cr, E Fork Patterson Cr, and Inyo Cr, illustrating the rugged hydraulic patterns that shape this corner of Lemhi County. These watercourses were foundational to the settlement of this arid valley, providing the necessary resources for ranching and mining operations that have historically characterized the region.