The Greenville 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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5.21 inches of rain fell in two days, the most for this week of the year since records began in 1939. The next wettest, 3.58 inches, fell in 2011.
Greenville’s center stands about 450 ft above sea level. Within three miles the land runs from 370 ft to 740 ft, a difference of 370 ft: rolling country. The highest named summit within 15 miles is Clark Mountain, about 1,440 ft, 13 miles west-northwest.
Under the town center the state geologic map shows Gasconade Dolomite (dolostone), from the Early Ordovician, 471 to 487 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 30×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 7 mi of the line.
Dolostone. Age: Cambrian, 487 to 497 million years old. About 7 mi of the line.
Sandstone, chert. Age: Early Ordovician, 471 to 487 million years old. About 6 mi of the line.
Alkali-feldspar-granite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 3 mi of the line.
Rhyolite. Age: Mesoproterozoic, 1 to 1.6 billion 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 Greenville reaches the Gulf of America by way of the Saint Francis and the Mississippi: about 1,010 river miles.
690 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Greenville; river miles along the main stem, rounded.
Greenville has a humid subtropical climate. Summer afternoons average 88° in July; winter nights fall to about 24° in January. About 51 inches of rain fall in a normal year.
On November 14 Greenville normally reaches 56° and falls to 37°. The record high is 83°, in 1955; the record low 11°, in 1940. The most rain on this date, 1.51 in, fell in 1957.
Normals 1991–2020 and records since 1939 at Wappapello Dam, 17 miles south-southeast. NOAA, through RCC-ACIS.
