The Los Olivos 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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4.92 inches of rain fell in two days, the most for this week of the year since records began in 1952. The next wettest, 4.50 inches, fell in 1965.
Los Olivos’s center stands about 800 ft above sea level. Within three miles the land runs from 610 ft to 1,260 ft, a difference of 650 ft: hilly country. The highest named summit within 15 miles is Cachuma Mountain, about 4,620 ft, 13 miles east-northeast.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 5×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, conglomerate. Age: Miocene to Pleistocene, less than 23 million years old. About 8 mi of the line.
Sandstone, mudstone. Age: Oligocene to Pliocene, 2.6 to 34 million years old. About 5 mi of the line.
Coarse-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. About 4 mi of the line.
Sandstone, mudstone. Age: Miocene to Pleistocene, less than 23 million years old. About 3 mi of the line.
Sandstone, mudstone. Age: Jurassic to Cretaceous, 66 to 202 million years old. About 2 mi of the line.
Serpentinite. Age: Middle Jurassic to Late Jurassic, 145 to 175 million years old. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit along the line are not listed.
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 Los Olivos reaches the Pacific Ocean by way of Alamo Pintado Creek and the Santa Ynez: about 45 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Los Olivos; river miles along the main stem, rounded.
Los Olivos has a warm-summer Mediterranean climate. Summer afternoons average 93° in August; winter nights fall to about 33° in December. About 21 inches of rain fall in a normal year.
On November 14 Los Olivos normally reaches 75° and falls to 38°. The record high is 93°, in 2021; the record low 31°, in 2022. The most rain on this date, 3.26 in, fell in 2025.
Normals 1991–2020 and records since 1952 at Cachuma Lake, 9 miles southeast. NOAA, through RCC-ACIS.
