
Cow Lakes dominates this high-desert basin in Malheur County, where the water is channeled through a complex system of natural and man-made features. The geography is defined by volcanic activity and water management, visible in the proximity of Jordan Craters to the expansive wetlands. A distinct constriction known as The Narrows separates the lake bodies, while a network of irrigation and drainage infrastructure including the Oliver Drain and Anawalt Drain illustrates the region's ranching history.
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1955 · Jordan Valley
USGS Topo · 1:250,000
1955 · Boise
USGS Topo · 1:250,000
1957 · Jordan Valley
USGS Topo · 1:250,000
1958 · Boise
USGS Topo · 1:250,000
1958 · Jordan Valley
USGS Topo · 1:250,000
1962 · Boise
USGS Topo · 1:250,000
1969 · Mahogany Gap
USGS Topo · 1:24,000
1969 · Jordan Craters South
USGS Topo · 1:24,000
1969 · Mc Cain Creek
USGS Topo · 1:24,000
1969 · Jordan Craters North
USGS Topo · 1:24,000