2014 Map of Blue Mountain Pass

About this map

Blue Mountain Pass serves as a central transit point in this high-desert region of Malheur County, where the ION Hwy (Highway 95) bisects the landscape. The geography is defined by a sophisticated network of water management features essential for ranching and land use, including a numbered series of basins such as Blue Mountain Reservoir Number One, Blue Mountain Reservoir Number Two, and Blue Mountain Reservoir Number Five. Significant terrain landmarks like The Cap and The Table rise above the surrounding flats, providing natural navigation points. The map details the seasonal water resources of the area, from Basque Flat Reservoir in the north to Crossroad Reservoir in the south, connected by drainage systems like Horse Corral Cr. This 2014 survey documents the modern infrastructure and remote topography of southeastern Oregon, illustrating how water storage and road networks like the Cascade Spur define human presence in the Great Basin.