Loading map...

1898 Map of Mt. Diablo

Name: 1898 Topographic Map of Mt. Diablo
Creator: U.S. Geological Survey
Published: 1898
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1898

About this map

Mt. Diablo dominates the central landscape of this late 19th-century survey, surrounded by the high peaks of North Peak and Eagle Pt. The northern slopes reveal a concentrated industrial cluster of coal-mining settlements, including Nortonville, Somersville, and Stewartville, which were vital to the region's early energy economy. The Star Mine sits near these communities, connected by a network of canyons like Markley Canyon and Perkins Canyon.

To the west, the village of Clayton serves as a gateway to the Arroyo de las Nueces y Bolbones, while the southern reaches descend into the expansive San Ramon Valley and Amador Valley. The presence of Morgan Territory and Canada de los Vaqueros highlights the transitional nature of the land from rugged summits to fertile valleys. Early transportation is represented by the S. P. R. R. San Francisco & New Orleans Line, which skims the northern edge near the Los Medanos boundary.