Loading map...

1990 Map of Graven Ridge

Name: 1990 Topographic Map of Graven Ridge
Creator: U.S. Geological Survey
Published: 1990
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1990

About this map

Graven Ridge dominates this northern California landscape, which is largely defined by the high-elevation terrain within the Modoc National Forest. This 1990 survey captures a region where water management is central to the land's utility, evidenced by a series of named reservoirs including Graves Reservoir, Grauen Reservoir, and Bayley Reservoir. These water bodies, along with numerous natural sources like Arnett Spring and Lunsford Spring, support the sparsely settled cattle and timber country typical of the Modoc Plateau.

The small settlement of Hilton stands as a focal point for local history researchers, situated near the expanse of Rocky Prairie. The map traces various drainage features such as Sheep Gulch and Rye Grass Swale, which weave through the complex topography of Portuguese Ridge and the deep cuts of South Fork Canyon. This documentation provides a clear view of the rural infrastructure and natural landmarks of the county just before the turn of the twenty-first century.