Loading map...

1949 Map of Alleghany

Name: 1949 Topographic Map of Alleghany
Creator: U.S. Geological Survey
Published: 1965
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1965

About this map

The gold-bearing quartz veins and gravel deposits of Sierra CO and Nevada Co are the central focus of this 1949 survey. Settlement is concentrated around Alleghany, while several historical mining centers have shifted to archaeology, including Moores Flat, Minnesota Flat, and Orleans Flat. The landscape is a complex network of deep ravines and high ridges, notably Pliocene Ridge and San Juan Ridge, which are honeycombed with workings like the Gold Crown Mine, Oriental Mine, and Kenton Mine.

Evidence of the region's hydraulic and hard-rock legacy is everywhere, from the Placer Diggings near Chips Flat to the deep river crossings like German Bar Mine on the Middle Fork Yuba River. Remote ranches such as Buck Ranch and Quinn Ranch suggest the transition from intensive mining to a more dispersed upland economy. This map serves as a detailed record of the mining infrastructure in the Tahoe National Forest before many of these sites were further reclaimed by the forest.