The Columbia River dominates the southern reaches of this landscape, carving a wide path through the borderlands of Washington and Oregon. This 2011 survey reveals an environment shaped by both natural hydrology and agricultural industry, where the river splits into the North Channel and South Channel around the Blalock Islands. Further downstream, smaller landforms like Telegraph Island and Rock Island break the water's surface. North of the river, the landscape transitions into upland areas defined by the seasonal drainage of Glade Creek and its East Branch. The presence of the Columbia Crest Winery Airport and the Sandpiper Farms Leveling Pond underscores the significance of large-scale viticulture and irrigation in this arid region. This era of development is further marked by the small settlement of Sage and a network of private roads like Sandpiper Farm Rd that connect these agricultural interests.
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This is the sole edition of this map. No revisions or reprints were ever made.
1906 · Blalock Island
USGS Topo · 1:125,000
1908 · Blalock Island
USGS Topo · 1:125,000
1915 · Prosser
USGS Topo · 1:125,000
1917 · Prosser
USGS Topo · 1:125,000
1953 · Pendleton
USGS Topo · 1:250,000
1953 · Walla Walla
USGS Topo · 1:250,000
1956 · Pendleton
USGS Topo · 1:250,000
1958 · Walla Walla
USGS Topo · 1:250,000
1962 · Canoe Ridge
USGS Topo · 1:24,000
1962 · Blalock Island
USGS Topo · 1:24,000