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2023 Map of Long Tom Reservoir

Name: 2023 Topographic Map of Long Tom Reservoir
Creator: U.S. Geological Survey
Published: 2023
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2023

About this map

Long Tom Reservoir sits at the heart of this high-desert and mountain landscape, where several seasonal drainages converge in Elmore County. The northern reaches are dominated by the Boise National Forest, with the South Fork Boise River carving through the northeastern corner near Indian Point and Sproule Flat. The terrain is defined by the sharp elevations of the Danskin Mountains and the Mount Bennett Hills, creating a complex network of canyons and creeks.

Historical movement through this terrain is evident in the naming of roads and landmarks. The Ne Immigrant Rd and the Long Tom (Dixie Cutoff) suggest established routes through these high flats. Named springs like McGuire Spring, Berneathy Spring, and Montrose Spring indicate the critical importance of water sources in this arid region, providing essential stopovers for travelers and livestock moving between Tollgate Hill and the reservoir.