The Moorpark 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.
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95° on Nov. 16, 2020, the hottest reading for this week of the year since 1923. Next is 95° in 2021.
Moorpark’s center stands about 530 ft above sea level. Within three miles the land runs from 430 ft to 1,150 ft, a difference of 720 ft: hilly country. The highest named summit within 15 miles is Santa Paula Peak, about 4,880 ft, 13 miles northwest.
Under the town center the state geologic map shows Quaternary alluvium and marine deposits (coarse-detrital), from the Pleistocene to Holocene, 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 7×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Basalt, andesite. Age: Late Oligocene to Late Miocene, 8 to 25 million years old. About 6 mi of the line.
Coarse-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. About 6 mi of the line.
Sandstone, mudstone. Age: Oligocene to Pliocene, 2.6 to 34 million years old. About 4 mi of the line.
Sandstone, conglomerate. Age: Miocene to Pleistocene, less than 23 million years old. About 3 mi of the line.
Sandstone, mudstone. Age: Miocene to Pleistocene, less than 23 million years old. About 3 mi of the line.
Coarse-detrital. Age: Pleistocene, less than 2.6 million years old. About 2 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 Moorpark reaches the Pacific Ocean by way of the Arroyo Simi, the Arroyo Las Posas and Calleguas Creek: about 20 river miles.
Often dry. About 100% of the way is mapped as streams that run only after rain or snowmelt; the water makes the whole trip in floods.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Moorpark; river miles along the main stem, rounded.
Moorpark has a cold semi-arid climate. Summer afternoons average 80° in August; winter nights fall to about 44° in December. About 12 inches of rain fall in a normal year.
On November 14 Moorpark normally reaches 73° and falls to 49°. The record high is 94°, in 1949; the record low 34°, in 2000. The most rain on this date, 1.63 in, fell in 1953.
Normals 1991–2020 and records since 1923 from the Camarillo Area threaded record (Camarillo Airport, 13 miles west-southwest, 460 ft lower). NOAA, through RCC-ACIS.
