Beauty Mountain dominates this portion of the High Desert landscape, where the boundary between Riverside County and San Diego County cuts across a complex series of valleys and canyons. The map documents a sparsely populated region characterized by distinct upland basins like Terwilliger Valley and Chihuahua Valley. The presence of numerous named water sources, such as Million Dollar Spring, Adobe Springs, and Dick Spring, highlights the critical importance of water management in this arid environment. Transportation is defined by a network of ranch and truck trails, including the Cooper Cienega Truck Trail and Walker Ranch Road, which connect isolated homesteads and geographical landmarks. The southern portion of the quadrangle shows the headwaters of the San Luis Rey River as it begins its descent through Dodge Valley.
86 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.
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