The Dunean 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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18° on Nov. 11, 1913, the coldest reading for this week of the year since 1884. Next is 18° in 1933.
Dunean’s center stands about 990 ft above sea level. Within three miles the land runs from 830 ft to 1,030 ft, a difference of 200 ft: gently rolling country. The highest named summit within 15 miles is Paris Mountain, about 2,040 ft, 8 miles north.
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 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 25×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mica-schist. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 12 mi of the line.
Gneiss. Age: Paleozoic, 252 to 542 million years old. About 6 mi of the line.
Biotite-gneiss, mica-schist. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 4 mi of the line.
Gneiss. Age: Ordovician, 445 to 487 million years old. About 2 mi of the line.
Biotite-gneiss. Age: Neoproterozoic to Cambrian, 487 to 1,000 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 Dunean reaches the Atlantic Ocean by way of Brushy Creek, the Reedy, the Saluda, the Congaree, the Santee and the South Santee: about 320 river miles.
Lakes on the way: Lib Pines Lake and Lake Murray.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Dunean; river miles along the main stem, rounded.
Dunean has a humid subtropical climate. Summer afternoons average 91° in July; winter nights fall to about 34° in January. About 47 inches of rain fall in a normal year.
On November 14 Dunean normally reaches 64° and falls to 44°. The record high is 79°, in 1999; the record low 20°, in 1906. The most rain on this date, 1.24 in, fell in 1961.
Normals 1991–2020 and records since 1884 at Greenville Downtown Airport, 5 miles east-northeast. NOAA, through RCC-ACIS.
