The Anderson 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.
20° on Nov. 13, 2013, the coldest reading for this week of the year since 1948. Next is 21° in 1997.
Anderson’s center stands about 800 ft above sea level. Within three miles the land runs from 670 ft to 830 ft, a difference of 160 ft: gently rolling country.
Under the town center the state geologic map shows Biotite-plagioclase-quartz gneiss and biotite-muscovite schist (biotite-gneiss, mica-schist), from the Neoproterozoic to Cambrian, 487 to 1,000 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 51×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Biotite-gneiss, mica-schist. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 24 mi of the line.
Gneiss. Age: Ordovician to Silurian, 422 to 487 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 Anderson reaches the Atlantic Ocean by way of Cox Creek, the Rocky and the Savannah: about 310 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Anderson; river miles along the main stem, rounded.
Anderson has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 33° in January. About 46 inches of rain fall in a normal year.
On November 14 Anderson normally reaches 64° and falls to 41°. The record high is 79°, in 2007; the record low 22°, in 2013. The most rain on this date, 1.44 in, fell in 1961.
Normals 1991–2020 and records since 1948 at Anderson Regional Airport, 3 miles west. NOAA, through RCC-ACIS.