The county line between Chouteau Co and Cascade Co divides this expansive landscape, defined by seasonal water and the rugged geography of the Great Plains. The small settlement of Portage sits near the southeastern corner, connected to the wider region by Us-87 and a network of rural routes like S Portage Rd. Local water sources are central to the area's utility, including Flick Lake, the Dick Golie Fish Pond, and Twenty-eight Mile Spring. The terrain is marked by significant drainages such as Huntley Coulee and Portage Coulee, which dictate the placement of roads like Dent Bridge Rd and Whitehorn Ln. This 2014 survey captures the persistence of these rural Montana townships, where land management and sparse settlements define the character of the high plains.
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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
1948 · Portage
USGS Topo · 1:62,500
1949 · Portage
USGS Topo · 1:62,500
1949 · Timber Coulee
USGS Topo · 1:62,500
1949 · Great Falls
USGS Topo · 1:62,500
1950 · Timber Coulee
USGS Topo · 1:62,500
1950 · Dent Bridge
USGS Topo · 1:62,500
1951 · Great Falls
USGS Topo · 1:62,500
1954 · Great Falls
USGS Topo · 1:250,000
1957 · Great Falls
USGS Topo · 1:250,000