The Salley 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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16° on Nov. 14, 2013, the coldest reading for this week of the year since 1947. Next is 17° in 1969.
Salley’s center stands about 380 ft above sea level. Within three miles the land runs from 260 ft to 420 ft, a difference of 160 ft: gently rolling country.
Under the town center the state geologic map shows Huber/Lisbon/Barnwell Formations, undivided (clay, sand), from the Eocene, 34 to 56 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 61×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Clay, sand. Age: Eocene, 34 to 56 million years old. About 20 mi of the line.
Sand, gravel. Age: Tertiary Neogene to Quaternary, less than 23 million years old. About 4 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 Salley reaches the Atlantic Ocean by way of Goodland Creek, the South Fork Edisto, the Edisto and the North Edisto: about 170 river miles.
100 miles of the trip are on the Edisto.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Salley; river miles along the main stem, rounded.
Salley has a humid subtropical climate. Summer afternoons average 93° in July; winter nights fall to about 34° in January. About 52 inches of rain fall in a normal year.
On November 14 Salley normally reaches 69° and falls to 41°. The record high is 81°, in 1999; the record low 16°, in 2013. The most rain on this date, 2.32 in, fell in 2008.
Normals 1991–2020 and records since 1947 at Pelion 0.8 NW, 14 miles north. NOAA, through RCC-ACIS.
