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1990 Map of Irwin

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

USGS Topo · Published 1990

About this map

Isolated ranching outposts and a complex network of seasonal lakes and meadows define this borderland region in the late 20th century. The settlement of Irwin serves as a small anchor in a landscape dominated by family-named landholdings, including Lefler Ranch, Hathorn Ranch, and McGinley Ranch. This 1990 survey captures the hydrological character of the Sandhills, where water management is visible through features like the Horseshoe Drainage Ditch and the Slim Meadow Ditch.

These drainage efforts connect various bodies of water such as North Twin Lake, South Twin Lake, and the large Alkali Lake. The geography is relatively sparse, reflecting a remote ranching economy positioned right along the South Dakota Nebraska state line. For researchers, the map provides a clear record of the specific ranch locations and the water infrastructure required to sustain agriculture in this corner of Cherry County.