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2017 Map of Gannvalley SE

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

USGS Topo · Published 2017

About this map

Glacial topography and the rigid Public Land Survey System define this section of Jerauld County. The landscape is characterized by numerous small depressions and prairie potholes, reflecting the post-glacial drainage patterns common to this part of the Dakotas. The intersection of local section-line roads like 225th St and 366th Ave creates a geometric grid that overlays the undulating terrain.

Boundaries for several townships meet here, including t107n r67w and t107n r66w, highlighting the division of rural territory into precise squares. While modern in its production date, the map preserves the historical alignment of the rural transport network, from northern routes like 228th St to the southern edge along 233rd St. This survey provides a detailed view of the water-retention features across the landscape, which are vital for local agricultural planning and land use.