The Taylorsville 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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−3° on Nov. 12, 1985, the coldest reading for this week of the year since 1895. Next is 5° in 1939.
Taylorsville’s center stands about 3,550 ft above sea level. Within three miles the land runs from 3,510 ft to 6,390 ft, a difference of 2,880 ft: mountain country. The highest named summit within 15 miles is Mount Ingalls, about 8,340 ft, 13 miles east-southeast.
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 5 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.
Andesite. Age: Devonian to Permian, 252 to 422 million years old. About 15 mi of the line.
Coarse-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. About 6 mi of the line.
Mafic-volcanic, greenstone. Age: Paleozoic to Mesozoic, 66 to 542 million years old. About 2 mi of the line.
Peridotite, serpentinite. Age: Neoproterozoic to Early Jurassic, 175 to 1,000 million years old. About 0.7 mi of the line.
Andesite. Age: Late Oligocene to Pleistocene, 2 to 24 million years old. About 0.6 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 Taylorsville reaches San Francisco Bay and the Pacific Ocean by way of Indian Creek, the East Branch North Fork Feather, the North Fork Feather, the Feather and the Sacramento: about 240 river miles.
75 miles of the trip are on the Sacramento.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Taylorsville; river miles along the main stem, rounded.
Taylorsville has a warm-summer Mediterranean climate. Summer afternoons average 89° in July; winter nights fall to about 25° in January. A normal year brings about 28 inches of snow; with the rain, that comes to about 42 inches of water.
On November 14 Taylorsville normally reaches 53° and falls to 29°. The record high is 80°, in 1921; the record low 5°, in 1985. The most rain on this date, 3.35 in, fell in 2025.
Normals 1991–2020 and records since 1895 at Quincy, 11 miles south-southwest, 130 ft lower. NOAA, through RCC-ACIS.
