Morony Dam and Ryan Dam anchor the industrial landscape of the Missouri River corridor in this 2011 survey. The river's winding path through the northern plains is marked by significant hydrological features, including the Big Falls and the confluence with Belt Creek near the Salem Road Bridge. The small settlement of Salem serves as a central point in an area defined by agricultural development and water management, visible in the numerous smaller dams such as those at Prairie Nest Ranch 1 Dam and O'Day Number 1 Dam.
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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
1948 · Portage
USGS Topo · 1:62,500
1949 · Portage
USGS Topo · 1:62,500
1954 · Great Falls
USGS Topo · 1:250,000
1954 · Lander Crossing
USGS Topo · 1:24,000
1954 · Waltham
USGS Topo · 1:24,000
1955 · Stockett
USGS Topo · 1:62,500