The Acworth 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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4.28 inches of rain fell in two days, the most for this week of the year since records began in 1947. The next wettest, 4.26 inches, fell in 2009.
Acworth’s center stands about 890 ft above sea level. Within three miles the land runs from 830 ft to 1,040 ft, a difference of 210 ft: rolling country. The highest named summit within 15 miles is Kennesaw Mountain, about 1,780 ft, 8 miles southeast.
Under the town center the state geologic map shows Biotite Gneiss/ Amphibolite (biotite-gneiss, amphibolite), from the Precambrian to Paleozoic.
The section below crosses 12 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 18×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Biotite-gneiss, amphibolite. Age: Precambrian to Paleozoic. About 5 mi of the line.
Dolostone. Age: Cambrian, 487 to 542 million years old. About 4 mi of the line.
Amphibolite, mica-schist, biotite-gneiss. Age: Precambrian to Paleozoic. About 4 mi of the line.
Hornblende-gneiss, amphibolite. Age: Precambrian to Paleozoic. About 3 mi of the line.
Dolostone. Age: Cambrian, 487 to 542 million years old. About 2 mi of the line.
Biotite-gneiss. Age: Precambrian to Paleozoic. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 6 smaller units along the line are not listed.
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 Acworth reaches Mobile Bay and the Gulf of America by way of Allatoona Lake, the Etowah, the Coosa, the Alabama and the Mobile: about 700 river miles.
Lakes on the way: Lay Lake and Allatoona Lake.
310 miles of the trip are on the Alabama.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Acworth; river miles along the main stem, rounded.
Acworth has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 31° in January. About 54 inches of rain fall in a normal year, with about 4 inches of snow.
On November 14 Acworth normally reaches 64° and falls to 39°. The record high is 80°, in 1989; the record low 21°, in 1986. The most rain on this date, 2.31 in, fell in 1972.
Normals 1991–2020 and records since 1947 at Dallas 7 NE, 6 miles southwest, 140 ft higher. NOAA, through RCC-ACIS.
