The Elkhorn 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.
Partly cloudy
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Mostly sunny
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3.84 inches of rain fell in two days, the most for this week of the year since records began in 1908. The next wettest, 3.69 inches, fell in 1972.
Elkhorn’s center stands barely above sea level. Within three miles the land runs from 0 ft to 470 ft, a difference of 470 ft: hilly country. The highest named summit within 15 miles is Fremont Peak, about 3,080 ft, 14 miles east-southeast.
The section below crosses 4 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.
Coarse-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. About 9 mi of the line.
Granodiorite, quartz-monzonite. Age: Early Cretaceous to Late Cretaceous, 66 to 145 million years old. About 3 mi of the line.
Coarse-detrital. Age: Pleistocene, less than 2.6 million years old. About 3 mi of the line.
Sand. Age: Quaternary, 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 Elkhorn reaches the Pacific Ocean by way of Elkhorn Slough: about 4 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Elkhorn; river miles along the main stem, rounded.
Elkhorn has a warm-summer Mediterranean climate. Summer afternoons average 74° in September; winter nights fall to about 39° in December. About 23 inches of rain fall in a normal year.
On November 14 Elkhorn normally reaches 68° and falls to 43°. The record high is 82°, in 1995; the record low 27°, in 1911. The most rain on this date, 2.12 in, fell in 2025.
Normals 1991–2020 and records since 1908 at Watsonville Waterworks, 8 miles north-northwest. NOAA, through RCC-ACIS.
