
Brogan sits at the southern edge of this eastern Oregon landscape, where the agricultural flats meet the rising slopes of the Willow Creek Valley. The terrain is defined by a sophisticated network of irrigation works essential to high-desert life, including the Cole Ditch, Low Line Ditch, and Side Ditch, which draw from water sources like the Pole Cr Reservoir. These man-made channels trace the contours of the land below Edwards Butte, supporting the ranching and farming operations near the settlement.
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1950 · Jamieson
USGS Topo · 1:62,500
1951 · Huntington
USGS Topo · 1:62,500
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
1980 · Brogan
USGS Topo · 1:100,000
1988 · Birch Creek Meadow
USGS Topo · 1:24,000
1988 · Rye Valley
USGS Topo · 1:24,000
1988 · Jamieson
USGS Topo · 1:24,000