
San Gorgonio Pass serves as a critical geographic gateway between the San Bernardino Mountains and the San Jacinto Mountains, funneling both transportation and water through this high-desert corridor. The modern landscape is defined by the braided path of the Whitewater River and the San Gorgonio River, which originate in the surrounding wilderness areas. Small settlements like Bonnie Bell and Snow Creek sit at the desert’s edge, where the terrain shifts from steep ridges like One Horse Ridge to the broad, wind-swept valley floor. The Pacific Crest National Scenic Trl traverses the northern heights, passing near landmarks such as The Matterdome and Kitching Peak. This mapping identifies the intricate network of local desert roads, including Haugen Lehman Way and Whitewater Canyon Rd, which connect these isolated mountain communities to the primary transit routes through the pass.
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This is the sole edition of this map. No revisions or reprints were ever made.
1901 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1901 · San Jacinto
USGS Topo · 1:125,000
1902 · San Gorgonio
USGS Topo · 1:125,000
1904 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1940 · Palm Springs
USGS Topo · 1:62,500
1942 · Banning
USGS Topo · 1:62,500
1943 · Banning
USGS Topo · 1:62,500
1944 · Palm Springs
USGS Topo · 1:62,500
1947 · Santa Ana
USGS Topo · 1:250,000
1949 · Santa Ana
USGS Topo · 1:250,000