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2017 Map of Ortley

Name: 2017 Topographic Map of Ortley
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

Ortley sits as a central prairie settlement on this high plateau known as the Coteau des Prairies, where the local terrain is defined by a complex network of glacial wetlands and watercourses. The headwaters of the Big Sioux River are visible here, winding through a landscape dotted with significant water bodies like Bill Smith Slough, Pearson Slough, and Anderson Lake.

Genealogists and local historians can trace legacy landmarks including the Ortley Cem and the Lebanon Lutheran Cem positioned along the rural sections. The map also captures the path of the Yellowstone Trl, an early transcontinental highway route that bisects the region. This 2017 survey reflects the enduring agricultural grid of Roberts, Day, and Grant counties, punctuated by named section roads such as 141st St and 143rd St.