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1981 Map of Boise

Name: 1981 Topographic Map of Boise
Creator: U.S. Geological Survey
Published: 1981
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1981

About this map

The Boise River valley anchors this detailed 1981 survey, documenting the expanding urban footprints of Boise, Meridian, and Nampa during a period of significant growth. The map illustrates a complex hydraulic landscape where the Snake River and Payette River meet an intricate network of irrigation and drainage features like the Dixie Drain and Middleton Slough. To the west, the Deer Flat National Wildlife Refuge surrounds the prominent Lake Lowell, while the northeast is defined by the rising elevations of the Boise Ridge within the Boise National Forest.

Transportation corridors including Interstate 80N and the Union Pacific railroad lines connect established agricultural hubs such as Caldwell, Emmett, and Homedale. Local landmarks like Eagle Island State Park and the Caldwell Municipal Airport appear alongside numerous small cemeteries and gravel pits, providing a clear record of the region's 20th-century transition from a primarily agrarian river valley to an interconnected metropolitan corridor.