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2021 Map of Ervay Basin, 2021 Print
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2021 Map of Ervay Basin

USGS Topo · Published 2021

About this map

The high plains of Natrona County converge at the Ervay Basin, a landscape defined by intermittent water sources and dramatic landforms. The S Fork Powder River winds through the northern sections of the map, carving a path through the Coalbank Hills and passing through Hoff Gap. This is a territory where water management is critical for the ranching economy, as seen in the presence of Detelder Reservoir, Collins Spring, and JE Sulphur Spring. Distinctive geological features like Maverick Butte and Cyclone Ridge provide navigational landmarks in a region largely accessed by rural routes such as Butler Oil Rd and Co Rd 212. The drainage network includes Cold Camp Cr and W Deer Cr, which support the seasonal hydrologic cycle of this remote Wyoming basin.

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Map Details

Date Portrayed2021
Date Published2021
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions24 x 29 inches

Editions of this 2021 Ervay Basin Map

This is the sole edition of this map. No revisions or reprints were ever made.

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain