2017 Map of Four Corners

About this map

Whitehorse Butte stands as a prominent landmark in this high-desert portion of Owyhee County, overlooking a landscape defined by seasonal water management and wide-open basins. The area’s geography is centered on the Four Corners locale and the surrounding Y P Desert, where ranching and livestock infrastructure are evident through a series of distributed catchments. Water sources like the Four Corners Reservoir, Little Juniper Basin Reservoir, and E Horse Basin Reservoir are critical points in an otherwise arid environment. The map details the complex terrain of the Little Horse Basin and Horse Basin, illustrating how the Public Land Survey System has historically partitioned this remote Idaho territory into the townships and ranges that still organize the land today.