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2017 Map of Onion Springs

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

USGS Topo · Published 2017

About this map

Onion Springs anchors this high-elevation landscape in Sublette County, where a complex network of seasonal watercourses and drainage draws defines the terrain. The hydrology of the area is particularly prominent, featuring the confluence-like patterns of Killpecker Cr, N Cottonwood Cr, and S Cottonwood Cr as they move through the basin. Large wetlands and marshy expanses are visible along Horse Cr and the upper reaches of Killpecker Cr, illustrating the typical high-desert riparian environments of the region.

Transportation is limited to a few primary arterial routes, specifically Ryegrass Rd and Cottonwood Ryegrass Rd, which follow the natural contours of the land. These roads connect the disparate drainages, including Brodie Draw and Antelope Draw, providing essential access through the Public Land Survey System sections. This 2017 survey by the U.S. Geological Survey provides a precise view of the geographic relationships between named landmarks such as Muddy Cr and Onion Cr.