
The Missouri River carves through the southwestern corner of this landscape, defining a complex corridor of Yorks Islands and riparian wetlands. The settlement of Holker sits near the river's edge, serving as a focal point for a region deeply shaped by agricultural water management. A sophisticated network of irrigation features, including the Broadwater - Missouri Canal, Fairchild Ditch, and Irish Ditch, underscores the area's reliance on diverting mountain runoff to the fertile Townsend Valley.
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This is the sole edition of this map. No revisions or reprints were ever made.
1886 · Fort Logan
USGS Topo · 1:250,000
1948 · White Sulphur Springs
USGS Topo · 1:250,000
1949 · Radersburg
USGS Topo · 1:62,500
1949 · Toston
USGS Topo · 1:62,500
1950 · Townsend
USGS Topo · 1:62,500
1950 · Duck Creek Pass
USGS Topo · 1:62,500
1958 · White Sulphur Springs
USGS Topo · 1:250,000
1961 · White Sulphur Springs
USGS Topo · 1:250,000
1965 · White Sulphur Springs
USGS Topo · 1:250,000
1976 · Townsend
USGS Topo · 1:100,000