The Hetch Hetchy Aqueduct cuts through the northern reaches of this landscape, a vital piece of water infrastructure traversing the terrain of the Diablo Range. This area at the convergence of Alameda, San Joaquin, and Stanislaus counties is defined by its complex drainage systems and numerous water sources, including Elder Spring and the Lone Tree Mineral Spring. The map documents a rugged, high-elevation topography where deep incisions like Hospital Canyon and Hellsinger Canyon separate prominent features such as Pegleg Ridge and North Ridge.
39 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1897 · Mt. Hamilton
USGS Topo · 1:62,500
1907 · Tesla
USGS Topo · 1:62,500
1913 · Romain
USGS Topo · 1:31,680
1915 · Vernalis
USGS Topo · 1:31,680
1916 · Tracy
USGS Topo · 1:31,680
1916 · Romain
USGS Topo · 1:31,680
1916 · Midway
USGS Topo · 1:31,680
1922 · Carbona
USGS Topo · 1:62,500
1938 · Mt. Boardman
USGS Topo · 1:62,500
1942 · Mt. Hamilton
USGS Topo · 1:62,500