2021 Map of Ortley
USGS Topo · Published 2021About this map
Ortley sits atop the glacial landscape of the Coteau des Prairies, a region defined by its distinct topography and network of wetlands. This section of Roberts County is characterized by a high concentration of water bodies, including Bill Smith Slough and Pearson Slough, which drain toward the headwaters of the Big Sioux River in the south. The settlement pattern follows a rigorous grid of section lines, though the path of Route 12 and the historic Yellowstone Trl cut across this geometry, marking the primary east-west corridor through the township.
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Editions of this 2021 Ortley Map
This is the sole edition of this map. No revisions or reprints were ever made.
