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2011 Map of Twin Bridges SW

Name: 2011 Topographic Map of Twin Bridges SW
Creator: U.S. Geological Survey
Published: 2011
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2011

About this map

Mining operations dominate the high country and drainage basins in this section of Madison County. Names like the Alaska Mine, Elizabeth Mine, and Never Fail Mine suggest a landscape shaped by mineral pursuit, with numerous labeled prospects such as the Anything Mine and Full House Mine scattered across the northern terrain. These sites follow the primary watercourses, including Rochester Creek and Nez Perce Creek, as they flow toward the agricultural bottomlands.

In the southeast, the geography shifts toward the broader river valley where the Big Hole River meets complex waterways like Third Slough, Owsley Slough, and Schoolhouse Slough. This riparian network contrasts with the upland mining district, supporting localized infrastructure like Rock Spring Ranch and several named county routes. The survey provides a clear view of the historical relationship between the industrial mining claims on the slopes and the ranching activity near the river.