The Winnsboro Mills 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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Sunny; warmer
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87° on Nov. 17, 1958, the hottest reading for this week of the year since 1896. Next is 85° in 1931.
Winnsboro Mills’s center stands about 570 ft above sea level. Within three miles the land runs from 390 ft to 600 ft, a difference of 210 ft: rolling country.
Under the town center the state geologic map shows Granite - Winnsboro pluton, from the Carboniferous to Permian, 252 to 359 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 52×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Granite. Age: Carboniferous to Permian, 252 to 359 million years old. About 10 mi of the line.
Metagranite, metadiorite. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 9 mi of the line.
Slate. Age: Middle Cambrian to Ordovician, 445 to 521 million years old. About 2 mi of the line.
Metagabbro. Age: Neoproterozoic to Devonian, 359 to 1,000 million years old. About 2 mi of the line.
Mylonite. Age: Carboniferous to Permian, 252 to 359 million years old. About 0.8 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 Winnsboro Mills reaches the Atlantic Ocean by way of Horse Creek, Little Wateree Creek, Big Wateree Creek, the Wateree, the Congaree, the Santee and the South Santee: about 240 river miles.
Lake on the way: Lib Pines Lake.
90 miles of the trip are on the Wateree.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Winnsboro Mills; river miles along the main stem, rounded.
Winnsboro Mills has a humid subtropical climate. Summer afternoons average 91° in July; winter nights fall to about 31° in January. About 45 inches of rain fall in a normal year.
On November 14 Winnsboro Mills normally reaches 64° and falls to 39°. The record high is 85°, in 1931; the record low 24°, in 2019. The most rain on this date, 2.00 in, fell in 1908.
Normals 1991–2020 and records since 1896 at Winnsboro, here. NOAA, through RCC-ACIS.
