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2011 Map of Ryan Creek

Name: 2011 Topographic Map of Ryan Creek
Creator: U.S. Geological Survey
Published: 2011
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2011

About this map

Sourdough serves as a central point of reference in this ranching and watershed region of Sweet Grass County. The landscape is defined by the complex drainage system of Sweet Grass Creek, which is joined by numerous tributaries including Ryan Creek, Dry Creek, and the wandering path of Hamilton Creek. These waterways dictate the local infrastructure, with rural routes like Sourdough Rd and Gibson Rd following the contours of the land and the creek beds.

Water management and natural terrain features are prominent, highlighted by Lower Glaston Lake in the north and Holzhey Dam to the south. The presence of Old Daves Creek and Gunnerson Draw illustrates the intricate topography of this Montana territory. For those researching land use or family history in this area, the map provides a clear look at the relationship between these water sources and the established roads connecting the few named settlements and landmarks.