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2012 Map of Blue Canyon

Name: 2012 Topographic Map of Blue Canyon
Creator: U.S. Geological Survey
Published: 2012
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2012

About this map

Emigrant Gap and the surrounding Sierra Nevada highlands are defined by a complex network of water management and transportation infrastructure. This area serves as a critical corridor where the S Yuba River and Bear River drainages meet, navigated by the Drum Canal and the impressive Bowman-Spaulding Conduit Flume. The presence of the Zion Hill Tunnel and the Blue Canyon PO highlights the historic rail and post-office heritage of the region, while the Rim Powerhouse at Lake Spaulding underscores the long-standing industrial importance of hydroelectric power in these mountains.

Legacy names such as Omega and the Arctic Mine Rd point to the area's mining roots, contrasted by the modern recreational landscape of the Lake Spaulding Campground and Golden Quartz Picnic Area. From the high point of Clyde Mountain down to the N Fork N Fork American River, the map traces the intricate water systems that feed into the Drum Forebay, illustrating how the natural topography has been harnessed for utility and transit.