The Camp Pendleton South plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
93° on Nov. 15, 2008, the hottest reading for this week of the year since 1909. Next is 91° in 1949.
Camp Pendleton South’s center stands about 40 ft above sea level. Within three miles the land runs from 0 ft to 400 ft, a difference of 400 ft: rolling country. Open water lies within three miles. The highest named summit within 15 miles is Margarita Peak, about 3,160 ft, 15 miles north.
Under the town center the state geologic map shows Older Quaternary alluvium and marine deposits (coarse-detrital), from the Pleistocene, less than 2.6 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 10×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mudstone, sandstone. Age: Paleocene to Oligocene, 23 to 66 million years old. About 7 mi of the line.
Sandstone, mudstone. Age: Oligocene to Pliocene, 2.6 to 34 million years old. About 4 mi of the line.
Coarse-detrital. Age: Pleistocene, less than 2.6 million years old. About 2 mi of the line.
Tonalite. Age: Middle Jurassic to Late Cretaceous, 66 to 175 million years old. About 0.5 mi of the line.
Argillite. Age: Paleozoic to Late Jurassic, 145 to 542 million years old. About 0.5 mi of the line.
Coarse-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. About 0.3 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in Camp Pendleton South reaches the Pacific Ocean by way of the Santa Margarita: about 2 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Camp Pendleton South; river miles along the main stem, rounded.
Camp Pendleton South has a cold semi-arid climate. Summer afternoons average 71° in August; winter nights fall to about 47° in January. About 10 inches of rain fall in a normal year.
On November 14 Camp Pendleton South normally reaches 67° and falls to 52°. The record high is 86°, in 1949; the record low 40°, in 2000. The most rain on this date, 0.49 in, fell in 1946.
Normals 1991–2020 and records since 1909 at Oceanside Marina, here. NOAA, through RCC-ACIS.