
The confluence of the Missouri River, Teton River, and Marias River at Loma anchor this mid-1980s landscape, illustrating the vital hydrology of north-central Montana. The city of Fort Benton serves as the historic hub, where the river's path is carved through deep coulees and marked by significant landmarks like Roosevelt Island and Cottonwood Bottom. The era is defined by the coexistence of working transportation corridors, such as the Burlington Northern Railroad Grade, and protected lands including the Upper Missouri River Wild and Scenic River. To the south, the terrain rises into the Highwood Mountains, featuring prominent peaks like Highwood Baldy and Goat Mountain. Distinctive geological formations, from the Chalk Cliffs to the iconic Square Butte, reflect a region shaped by both ancient erosion and modern agricultural development, seen in the numerous reservoirs and landing strips dotting the plains near Geraldine and Montague.
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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
1890 · Fort Benton
USGS Topo · 1:250,000
1892 · Fort Benton
USGS Topo · 1:250,000
1897 · Fort Benton
USGS Topo · 1:250,000
1919 · Big Sandy
USGS Topo · 1:125,000
1948 · Portage
USGS Topo · 1:62,500
1949 · Portage
USGS Topo · 1:62,500
1950 · Dent Bridge
USGS Topo · 1:62,500
1953 · Boggs Island
USGS Topo · 1:24,000
1953 · Rocky Lake
USGS Topo · 1:24,000