The Santa Clara River valley and its surrounding canyons define this landscape of suburban expansion and industrial utility in Los Angeles County. Large-scale infrastructure is prominent, notably the Los Angeles Aqueduct and the Dry Canyon Reservoir in the north, while the southern reaches show the dense residential patterns of Santa Clarita and Newhall. The region's petroleum history remains visible through active installations like the Honor Rancho Oil Field and the Castaic Junction Oil Field, which share the valley floor with the Saugus Speedway. Institutional land use is also significant here, with specialized facilities such as Forestry Camp Number Four and Junior Probation Camp Number Four situated in the hills east of the S Fork Santa Clara River.
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This is the sole edition of this map. No revisions or reprints were ever made.
1900 · Fernando
USGS Topo · 1:62,500
1901 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1903 · Tejon
USGS Topo · 1:125,000
1903 · Camulos
USGS Topo · 1:125,000
1903 · Santa Susana
USGS Topo · 1:62,500
1904 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1915 · Elizabeth Lake
USGS Topo · 1:125,000
1917 · Elizabeth Lake
USGS Topo · 1:125,000
1925 · Sylmar
USGS Topo · 1:24,000
1928 · Sylmar
USGS Topo · 1:24,000