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2021 Map of Manderson SE

Name: 2021 Topographic Map of Manderson SE
Creator: U.S. Geological Survey
Published: 2021
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2021

About this map

The Nowood River cuts through the southern reaches of this Wyoming landscape, defining a corridor of agricultural activity in an otherwise arid basin. Irrigation infrastructure, including the Avent Ditch and Shafer Ditch, traces the river valley, supporting local ranching efforts near the McDermotts Gulch drainage. To the north, the terrain transitions into the broad, open expanse of Basin Flats, a high-desert plateau marked by seasonal watercourses like Alkali Cr and the deeply incised Coyote Gulch.

The eastern edge of the map is dominated by the rising elevation of Blue Ridge, which overlooks the complex system of draws and gulches that feed into the river basin. This area is characterized by its traditional Western land divisions and sparse road network, featuring routes such as Co LN 50 and Ainsworth Unit Rd. The map illustrates the specialized water management required for settlement in Big Horn County, where every creek and draw, from Wild Horse Draw to East Fork McDermotts Gulch, plays a role in the local watershed.