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1986 Map of Grass Valley

Name: 1986 Topographic Map of Grass Valley
Creator: U.S. Geological Survey
Published: 1987
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1987

About this map

Dixie National Forest defines this high-elevation landscape, where the headwaters of the Santa Clara River and South Fork Pinto Creek originate among the peaks of the Pine Valley Mountains. The 1986 survey shows a terrain managed for water resources and livestock, evidenced by the presence of Sheep Pens and several critical water catchments including Pine Valley Reservoir, Grass Valley Reservoir, and White Rocks Reservoir. These features suggest the vital role of this region in supporting downstream agriculture and ranching in the arid basin below.

Prominent landmarks such as Timber Mountain and Gardner Peak rise above named meadows and flats like Jodes Flat and Grassy Flat. The map documents a network of primitive transportation, including a Pack Trail and various 4wd routes that navigate through Mill Canyon and Cougar Canyon. The distribution of seasonal springs, such as Slew Spring and Big Water, highlights the essential hydrology that sustained early resource extraction and land use in this part of Washington County.