The Smithville 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.
Smithville’s center stands about 330 ft above sea level. Within three miles the land runs from 280 ft to 380 ft, a difference of 100 ft: gently rolling country.
Under the town center the state geologic map shows Eocene and Oligocene Residuum, undifferentiated (sand, clay), from the Eocene to Oligocene, 23 to 56 million years old.
The section below crosses 2 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, clay. Age: Eocene to Oligocene, 23 to 56 million years old. About 17 mi of the line.
Limestone. Age: Eocene, 34 to 56 million years old. About 7 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 Smithville reaches the Gulf of America by way of Muckaloochee Creek, Muckalee Creek, the Flint and the Apalachicola: about 240 river miles.
110 miles of the trip are on the Apalachicola.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Smithville; river miles along the main stem, rounded.
Smithville 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 Smithville 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, 12 miles northwest, 170 ft higher. NOAA, through RCC-ACIS.
