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2018 Map of Alcalde Hills

Name: 2018 Topographic Map of Alcalde Hills
Creator: U.S. Geological Survey
Published: 2018
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2018

About this map

Alcalde Hills and the western edge of the San Joaquin Valley meet on this 2018 survey, centered on the rugged transition between the Diablo Range and the agricultural flatlands. The city of Coalinga anchors the southeast corner, where the grid of Pleasant Valley begins to give way to the complex topography of the foothills. This landscape is defined by its drainage patterns, with numerous named corridors like Nunez Canyon, Salt Canyon, and Coalmine Canyon cutting through the ridges.

Water sources are carefully recorded throughout the high ground, including Indian Springs, Mustang Spring, and Barn Spring, providing vital landmarks in this arid terrain. Transport is represented by historical access points such as Joaquin Ridge Lookout Rd and Los Gatos Cyn Rd. The map also identifies specific local topographic features like Dodge Hill and the expanse of Dutch Oven Flat, which offer distinct reference points for local history and land management.