2020 Map of Arco South

About this map

Arco and its surrounding high desert landscape are documented here just south of the Lost River Range. The town occupies the northern edge of the map, where the Big Lost River Valley opens into a complex network of natural and engineered waterways including the Big Lost River, Ferris Slough, and the Arco Canal. This water management system is essential for the valley's character, contrasting sharply with the arid terrain found further south. In the southwestern quadrant, the boundaries of Craters of the Moon National Preserve mark the transition into one of Idaho's most distinctive volcanic landscapes. Local travel and infrastructure are defined by the Arco-Butte County Airport and a grid of rural routes such as the Arco-Minidoka Rd, providing a detailed look at the interface between human settlement and the volcanic frontier in the early twenty-first century.