The Andersonville 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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3.13 inches of rain fell in two days, the most for this week of the year since records began in 1956. The next wettest, 3.10 inches, fell in 2018.
Andersonville’s center stands about 430 ft above sea level. Within three miles the land runs from 330 ft to 510 ft, a difference of 180 ft: gently rolling country.
Under the town center the state geologic map shows Claiborne undifferentiated (sandstone, shale), from the Eocene, 34 to 56 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 62×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, shale. Age: Eocene, 34 to 56 million years old. About 10 mi of the line.
Sand, clay. Age: Eocene to Oligocene, 23 to 56 million years old. About 5 mi of the line.
Sand, clay. Age: Paleocene, 56 to 66 million years old. About 4 mi of the line.
Fine-detrital. Age: Quaternary, less than 2.6 million years old. About 3 mi of the line.
Limestone. Age: Eocene, 34 to 56 million years old. About 1 mi of the line.
Sand. Age: Cretaceous, 66 to 145 million years old. About 0.9 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 Andersonville reaches the Gulf of America by way of Prison Branch, Sweetwater Creek, the Flint and the Apalachicola: about 280 river miles.
160 miles of the trip are on the Flint.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Andersonville; river miles along the main stem, rounded.
Andersonville has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 36° in January. About 51 inches of rain fall in a normal year.
On November 14 Andersonville normally reaches 68° and falls to 44°. The record high is 80°, in 1958; the record low 26°, in 1963. The most rain on this date, 2.92 in, fell in 1972.
Normals 1991–2020 and records since 1956 at Plains Sw Ga Experiment Sta, 17 miles southwest. NOAA, through RCC-ACIS.
