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2015 Map of Calaveras Reservoir

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

USGS Topo · Published 2015

About this map

Calaveras Reservoir dominates the rugged divide between Alameda and Santa Clara counties, marking a significant hydrological node for the South Bay. This 2015 survey details the steep topography of the Diablo Range, where high points like Mt Allison and Monument Peak overlook the developing edges of the Santa Clara Valley. The transition from the rural heights of Oak Ridge and the Buellis Hills to the dense residential grids of Milpitas and San Jose illustrates the region's complex suburban interface.

Water management features are prominent, including the Alameda Diversion Tunnel and the S Bay Aqueduct, which support the metropolitan areas below. On the valley floor, the map traces the drainage of Berryessa Cr and Upper Penitencia Cr, the latter flowing through Alum Rock Canyon near the prominent landmark of Eagle Rock. This landscape serves as a record of infrastructure—from the historic Calaveras Rd to the suburban street networks of neighborhoods like Berryessa and East Foothills.