
Industrial activity and rugged terrain define this section of the Santa Ana Mountains during the late 1960s. The map highlights a history of extraction through labels like the Black Star Coal Mine, Santiago Coal Mine, and the Claymont Clay Mine, indicating the region's diverse mineral resources. Water management infrastructure is prominent, centered on the Santiago Reservoir and Santiago Dam, while the northern edge is traced by the Santa Ana River and the developing Riverside Freeway.
43 named features on this map. Tap any name to fly to it.
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7 editions found
1896 · Santa Ana
USGS Topo · 1:62,500
1896 · Anaheim
USGS Topo · 1:62,500
1898 · Anaheim
USGS Topo · 1:62,500
1901 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1901 · Santa Ana
USGS Topo · 1:62,500
1901 · Anaheim
USGS Topo · 1:62,500
1902 · Corona
USGS Topo · 1:125,000
1904 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1932 · Orange
USGS Topo · 1:31,680
1932 · Tustin
USGS Topo · 1:31,680