
Malheur Reservoir dominates the northern landscape of this Malheur County high-desert terrain, where drainage networks like Cottonwood Cr and Willow Cr carve through the arid plateau. The map centers on the transition between the rolling uplands of Reservoir Butte and the namesake Cow Valley to the south. Historically significant transit corridors define the layout of the region, most notably the Military Rd and the John Day Hwy, which intersect near the drainage of Antelope Springs Cr. These routes speak to the area's long-standing role as a passage for travel and livestock through the southeastern Oregon interior. The elevation rises significantly at Brogan Hill and Brogan Hill Summit, overlooking a topography defined by complex water management features like Davis Reservoir Four and seasonal creeks.
21 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1955 · Baker
USGS Topo · 1:250,000
1959 · Baker
USGS Topo · 1:250,000
1964 · Bridgeport
USGS Topo · 1:62,500
1964 · Brogan
USGS Topo · 1:62,500
1964 · Ironside
USGS Topo · 1:62,500
1966 · Clover Creek Ranch
USGS Topo · 1:62,500
1980 · Brogan
USGS Topo · 1:100,000
1990 · Mormon Basin
USGS Topo · 1:24,000
1990 · Brady Creek
USGS Topo · 1:24,000
1990 · Scratch Post Butte
USGS Topo · 1:24,000