1984 Map of North Chapin Mountain

About this map

The Emigrant Trail traverses the western edge of this landscape, marking a path of historic westward expansion across the high desert of Southern Idaho. This 1984 provisional map captures the convergence of natural water systems and modern infrastructure, where the Snake River feeds into Lake Walcott within the protected bounds of the Minidoka National Wildlife Refuge. The terrain is defined by the steep elevation of North Chapin Mountain and the deep incisions of Heglar Canyon, illustrating the transition from the fertile Raft River Valley to higher rocky outcrops. Local watercourses like Calder Creek and Lanes Gulch drain the eastern slopes, while a large industrial Substation and a network of pipelines signal the region's role in utility transmission and irrigation management during the late twentieth century.