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2015 Map of Hernandez Reservoir

Name: 2015 Topographic Map of Hernandez Reservoir
Creator: U.S. Geological Survey
Published: 2015
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2015

About this map

Hernandez Reservoir dominates the southern landscape of this 2015 survey, serving as a primary water source along the San Benito River in the high country of the Diablo Range. The terrain is defined by a series of significant canyons and peaks, including Black Mtn, Tucker Mtn, and the distinctive Castle Rock to the north. These landforms create a complex network of drainages such as Byles Canyon and Post Canyon.

Transportation through this portion of San Benito County is sparse, centered on New Idria Rd and the Dogwood Lateral Six. Small water features like Merrill Lake and various springs, including Ashurst Spring and Red Corral Spring, indicate the historical importance of water management for local ranching or mining interests in this semi-arid region. The presence of the Syncline Divide highlights the underlying geological structure that shapes the valley of Vallecitos.