The San Ysidro Mountains dominate this borderland landscape, defined by a sharp divide between San Diego County and Baja California. The international boundary is traced as it follows the course of the Tijuana River and Tecate Cr near Marron Valley. High-altitude features like Otay Mtn and Donohoe Mtn overlook a series of steep drainages, including O'Neal Canyon and Bee Canyon.
31 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.
1903 · Cuyamaca
USGS Topo · 1:125,000
1904 · Southern California Sheet No. 2
USGS Topo · 1:250,000
1942 · Potrero
USGS Topo · 1:48,000
1943 · Jamul
USGS Topo · 1:62,500
1944 · Potrero
USGS Topo · 1:62,500
1950 · San Diego
USGS Topo · 1:250,000
1954 · San Diego
USGS Topo · 1:250,000
1955 · San Diego
USGS Topo · 1:250,000
1955 · Jamul Mountains
USGS Topo · 1:24,000
1955 · Otay Mesa
USGS Topo · 1:24,000