The East Sumter 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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3.33 inches of rain fell in two days, the most for this week of the year since records began in 1901. The next wettest, 2.85 inches, fell in 1979.
East Sumter’s center stands about 170 ft above sea level. Within three miles the land runs from 140 ft to 190 ft, a difference of 50 ft: nearly flat ground.
Under the town center the state geologic map shows Bear Bluff Formation (sand, limestone), from the Tertiary, 2.6 to 66 million years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sand, limestone. Age: Tertiary, 2.6 to 66 million years old. About 12 mi of the line.
Sand, clay. Age: Pliocene, 2.6 to 5.3 million years old. About 8 mi of the line.
Clay, sand. Age: Eocene, 34 to 56 million years old. About 2 mi of the line.
Sand, gravel. Age: Quaternary, less than 2.6 million years old. About 2 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 East Sumter reaches the Atlantic Ocean by way of Alligator Branch, Scape Ore Swamp and the Black River: about 140 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of East Sumter; river miles along the main stem, rounded.
East Sumter has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 33° in January. About 49 inches of rain fall in a normal year.
On November 14 East Sumter normally reaches 65° and falls to 40°. The record high is 83°, in 1989; the record low 22°, in 2013. The most rain on this date, 1.65 in, fell in 1940.
Normals 1991–2020 and records since 1901 at Sumter, 3 miles west. NOAA, through RCC-ACIS.
