Loading map...

1972 Map of Diamond Mtn

Name: 1972 Topographic Map of Diamond Mtn
Creator: U.S. Geological Survey
Published: 1972
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1972

About this map

The high ridge of the Diamond Mountains serves as a geographic and administrative spine for this 1972 survey, marking the boundary between the Lassen National Forest and the Plumas National Forest. The landscape is defined by its transition from the steep elevations of Diamond Mtn and the Gilman Basin to the high-country flats of Aspen Flat. Evidence of localized infrastructure is found in the scattered water management features such as Nagel Reservoir, Ridenoure Reservoir, and the networks of Ditch lines feeding into the lower meadows.

Local history is anchored in the northeast corner at the Peter Lassen Grave, a site of regional significance near the Richmond Sch. The area reflects a mix of preservation and recreation, where the Emerson Lake Golf Club sits near rugged landmarks like Red Rock. The network of unimproved roads and motorways, such as the Skyline Motorway, suggests a terrain managed for forest service access and fire prevention.