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2014 Map of Big Marys Island

Name: 2014 Topographic Map of Big Marys Island
Creator: U.S. Geological Survey
Published: 2014
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2014

About this map

Big Marys Island sits as a prominent landform within the channel of the Yellowstone River, characterizing this stretch of the river valley in Yellowstone County. The surrounding terrain is defined by a series of drainage systems that have carved through the Montana landscape, including the deep recess of Devils Gulch and the winding course of Cow Gulch. These natural features dictated the early placement of rural routes such as Castle Butte Rd and Scothern Rd, which follow the contours of the high ground above the river.

The 2014 survey documents a landscape where traditional transit corridors, like the Custer Frontage Rd, parallel the river's southern bank alongside Sand Cr. Numerous smaller waterways, including Railroad Cr, Hibbard Cr, and Mill Cr, feed into the larger river system, illustrating the complex hydrology of the region. The map provides a detailed view of the sectional divisions across townships T4N and T3N, highlighting the enduring impact of the Public Land Survey System on the modern geography of the Yellowstone valley.