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1955 Map of Emigrant Gap

Name: 1955 Topographic Map of Emigrant Gap
Creator: U.S. Geological Survey
Published: 1957
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1957

About this map

Graniteville and the surrounding Sierra Nevada foothills define this mid-century topographic portrait of a landscape shaped by mining and hydraulic engineering. The map reveals a complex infrastructure of water management, featuring the South Yuba Canal, Boardman Canal, and numerous tunnels like the Clear Creek Tunnel and Rucker Tunnel. These systems served both the power needs of the Rim Powerhouse and the extensive gold mining operations found throughout the region, such as the Gaston Mine and the Zeibright Mine.

The Southern Pacific railroad corridor serves as the primary artery through Emigrant Gap and Cisco, supported by a series of snowsheds and technical markers like the Airway Beacon and Radio Tower. Cultural history is noted at the sites of Summit City and Baltimore Town, alongside the local Cemetery. Recreations and community life are represented by the Marin-Sierra Boy Scout Camp and various camps such as Camp 19.