San Gorgonio Mountain stands as the central point of this high-altitude landscape, where numerous forks of the Whitewater River and the S Fork Santa Ana River originate. The 2012 survey illustrates the network of backcountry infrastructure including South Fork Cabin and East Fork Cabin, alongside high-country waypoints such as Gunsight Pass and Mine Shaft Saddle. The drainage patterns are intricate, with the E Fork Whitewater River dropping past Silverwood Falls and dramatic topographic breaks like Mill Creek Jumpoff and Middle Fork Jumpoff. Small alpine water bodies including Dollar Lake and Dry Lake are visible alongside specialized seasonal sites like Mission Springs Campground and Bear Wallows Campground. The presence of roads such as Raywood Flat Rd and Petrero Rd indicates the limited vehicular access into these protected mountain heights during the early 21st century.
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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