2020 Map of Mayfield

About this map

Mayfield and Regina anchor this high-desert landscape on the border of Ada and Elmore counties, where the high plains meet the southwestern foothills of the Boise National Forest. The map reveals a complex network of seasonal drainages and draws that define the local geography, including Indian Cr, Slater Cr, and the branching arms of Blacks Cr. Evidence of the region’s ranching and transit history is found in the naming of topographical features such as Slaters Flat, McIntyre Draw, and Caldwell Draw. These family-named landmarks, alongside the historic route of Old Hwy 30, illustrate the traditional corridors of movement between the Treasure Valley and the mountain interior. The northern edge of the map rises into the Danskin mountains, marked by various forest service routes like Nat For Dev Rd 189, providing a detailed view of the rugged transition from open range to timbered forest.