The Hetch Hetchy Aqueduct cuts across the northern reaches of this high-elevation terrain, marking a critical piece of California's water infrastructure as it traverses the Diablo Range. This interior portion of the Coast Ranges is defined by steep ridges and deep drainages, with Mines Rd providing the primary access through the southern hills. Elevations rise significantly toward the center of the map at Cedar Mtn and south toward Mt Wallace, where the landscape is carved by seasonal watercourses like Arroyo Mocho and Corral Hollow Cr. The presence of Sweet Springs and various named canyons, including Mitchell Ravine and Sulphur Spring Canyon, suggests a landscape where water sources were essential for the early ranching and mining operations that once navigated these ridges.
37 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
1916 · Tracy
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
1942 · Carbona
USGS Topo · 1:62,500
1942 · Mt. Boardman
USGS Topo · 1:62,500
1942 · Altamont
USGS Topo · 1:62,500