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1968 Map of Cannon Ball

Name: 1968 Topographic Map of Cannon Ball
Creator: U.S. Geological Survey
Published: 1971
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1971

About this map

The confluence of the Cannonball River and the Missouri River anchors this North Dakota landscape during a period of transition in the late 1960s. The valley is dominated by Lake Oahe, the massive reservoir created by the Oahe Dam, which is shown here with its normal pool elevation of 1608 feet. Along the western shore lies the community of Cannon Ball, situated within the Standing Rock Indian Reservation Boundary.

Evidence of earlier infrastructure remains visible through the Old Railroad Grade tracking north along the river bluffs. Cultural landmarks like the Cannon Ball Memorial Congregational Cem provide specific points for genealogical research, while the terrain is marked by prominent elevations such as Twin Buttes and Coal Butte. The eastern portion of the map includes the Sunburst Lake National Wildlife Refuge, highlighting the region's dedicated conservation areas alongside the modified river system.