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1955 Map of Sioux City

Name: 1955 Topographic Map of Sioux City
Creator: U.S. Geological Survey
Published: 1981
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1981

About this map

The Missouri River forms the central artery of this mid-century landscape, defining the borders between South Dakota, Nebraska, and Iowa. At the northwestern bend, the massive Gavins Point Dam and its Spillway create the expansive Lewis and Clark Lake, a significant modification to the river's natural course. The map documents the complex cultural geography of the region, showing the contiguous boundaries of the Santee Indian Reservation, Winnebago Indian Reservation, and Omaha Indian Reservation.

Urban development is concentrated at the tri-state junction where Sioux City serves as a regional hub, supported by a dense network of railroads including the Chicago and North Western and the Milwaukee St Paul and Pacific. Beyond the river valley, the terrain is marked by an orderly grid of agricultural settlements such as Wayne, Hartington, and Creighton, while the confluence of the Big Sioux River and Floyd River underscores the importance of local hydrology to early settlement patterns.