
Snake River frontage and the irrigation networks of Malheur County define this landscape along the Oregon-Idaho border. The settlement of Annex sits on the high ground above Lower Dead Ox Flat, where a complex system of water management including Slide Ditch, the Upper Ditch, and the Owyhee Canal supports the agricultural economy of the river valley. The river itself is punctuated by Westlake Island and McRea Island, illustrating the shifting alluvial nature of the border corridor.
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This is the sole edition of this map. No revisions or reprints were ever made.
1897 · Weiser
USGS Topo · 1:125,000
1951 · Moores Hollow
USGS Topo · 1:24,000
1951 · Malheur Butte
USGS Topo · 1:24,000
1951 · Moores Hollow
USGS Topo · 1:62,500
1951 · Payette
USGS Topo · 1:24,000
1951 · Weiser South
USGS Topo · 1:24,000
1952 · Olds Ferry
USGS Topo · 1:24,000
1952 · Olds Ferry
USGS Topo · 1:62,500
1952 · Olds Ferry SE
USGS Topo · 1:24,000
1953 · Mann Creek
USGS Topo · 1:62,500