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1986 Map of Big Wall NW
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1986 Map of Big Wall NW

USGS Topo · Published 1986

About this map

Little Wall Creek and Crooked Creek carve through this section of central Montana, which straddles the border of Petroleum Co and Musselshell Co. The terrain is defined by the broad topographic depression of the Devils Basin, a significant landform for local ranchers and geologists alike. This 1986 provisional edition, based on field checks from the late 1970s, captures a sparsely settled landscape where human activity is limited to a few specific utilitarian sites. Functional landmarks such as a Gravel Pit, a Corral, and a single irrigation Ditch point to the area's primary use for livestock grazing and road maintenance. The intricate contour work illustrates the complex drainage patterns of the high plains, showing the transition between the dry upland basins and the creek valleys.

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Map Details

Date Portrayed1986
Date Published1986
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 27 inches

Editions of this 1986 Big Wall NW 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