Sun River is the central fixture of this Cascade County landscape, where the river's winding course is mirrored by an intricate network of irrigation infrastructure vital to the region's agricultural character. This 2014 survey documents the sophisticated water management systems that define the valley, including the Greenfield S Canal, the Sun River Valley Ditch, and Canal K. These man-made waterways contrast with the natural drainage of Mill Coulee Cr and Muddy Creek, illustrating how the land has been engineered to support local farming.
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This is the sole edition of this map. No revisions or reprints were ever made.
1886 · Great Falls
USGS Topo · 1:250,000
1949 · Cascade
USGS Topo · 1:62,500
1949 · Vaughn
USGS Topo · 1:62,500
1950 · Fairfield
USGS Topo · 1:62,500
1951 · Cascade
USGS Topo · 1:62,500
1952 · Vaughn
USGS Topo · 1:62,500
1954 · Great Falls
USGS Topo · 1:250,000
1957 · Great Falls
USGS Topo · 1:250,000
1960 · Simms
USGS Topo · 1:62,500
1976 · Great Falls North
USGS Topo · 1:100,000