2015 Map of Alleghany

About this map

Alleghany and the surrounding mining district of the northern Sierra Nevada are documented in this detailed topographical study within the Tahoe National Forest. The landscape is defined by the deep incisions of the Middle Yuba River and its tributaries, such as Kanaka Cr and the ominously named Bloody Run. These drainages created the numerous ridges and flats that supported early settlement, including Moores Flat and Plumbago. Many of these locations, such as Minnesota Flat and Orleans Flat, represent the enduring footprint of hydraulic and lode mining operations in the region. The map also records a dense network of mountain roads like Graniteville Rd and Ridge Rd, which connect the isolated ravines of Jersey Ravine and Jackass Ravine to the broader regional infrastructure at the border of Sierra and Nevada counties.