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1950 Map of Alleghany

Name: 1950 Topographic Map of Alleghany
Creator: U.S. Geological Survey
Published: 1966
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1966

About this map

The gold-mining legacy of the Northern Sierra is etched into the landscape around Alleghany and the South Yuba River. This mid-century survey documents the transition from active industrial extraction to a landscape of historical remnants, featuring the massive hydraulic scars of the Malakoff Diggings and Alpha Diggings. The map preserves the locations of numerous family-named operations and sites like the Miller Ranch (Site) and Fivemile House, alongside active water management infrastructure like the Scotts Flat Reservoir.

Infrastructure for the mining economy is evident through the network of high-elevation roads and water systems, including the Sunshine Trail and the complex of canals and springs feeding the local basins. Named landmarks such as Blue Tent School and the White Cloud Guard Sta provide critical anchors for genealogists and local historians tracing the settlement patterns of this corner of Tahoe National Forest before many smaller sites were reclaimed by the forest.