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1969 Map of Garrison Dam South

Name: 1969 Topographic Map of Garrison Dam South
Creator: U.S. Geological Survey
Published: 1990
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1990

About this map

The massive Garrison Dam anchors this landscape at the edge of Lake Sakakawea, where the North Dakota terrain is defined by the managed flow of the Missouri River. Built on the boundary of Mercer Co and Mc Lean Co, the dam's footprint includes the Garrison Dam National Fish Hatchery and a series of Sewage Disposal Ponds necessary for the support of nearby Riverdale. This survey documents the post-dam environment, highlighting recreational and utility infrastructure like the Riverdale No 1 Landing Strip, a Boat Ramp, and the Downstream Public Use Area.

Away from the water, the topography reveals the transition from river bottomlands to dissected uplands. Traces of previous infrastructure remain, such as an Old Railroad Grade and several Gravel Pits scattered near the riverbanks. The presence of St Pauls Ch and scattered farm features like a Flowing Well west of the river provide key markers for local family history and rural development in the Missouri River valley during the late 1960s.