Aguanga and Oak Grove anchor this 2015 study of the inland valleys at the border of Riverside and San Diego counties. The terrain is defined by a series of high-altitude valleys, including Wilson Valley, Tule Valley, and Dameron Valley, separated by prominent heights such as Billy Goat Mtn and Tule Peak. The land use shows a mix of private holdings and public trust, with a significant portion of the southern area falling within the Cleveland National Forest.
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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
1903 · Ramona
USGS Topo · 1:125,000
1904 · Southern California Sheet No. 2
USGS Topo · 1:250,000
1904 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1939 · Warner Springs
USGS Topo · 1:62,500
1939 · Palomar Mountain
USGS Topo · 1:62,500
1940 · Hemet Reservoir
USGS Topo · 1:62,500
1942 · Hemet Reservoir
USGS Topo · 1:62,500
1942 · Hemet
USGS Topo · 1:62,500