The Georgetown-Quitman County unified government 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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Georgetown-Quitman County unified government’s center stands about 370 ft above sea level. Within three miles the land runs from 270 ft to 500 ft, a difference of 230 ft: rolling country.
Under the town center the state geologic map shows Providence Sand, from the Cretaceous, 66 to 145 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 44×. 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. Age: Cretaceous, 66 to 145 million years old. About 12 mi of the line.
Clay, sand. Age: Paleocene, 56 to 66 million years old. About 6 mi of the line.
Fine-detrital. Age: Quaternary, less than 2.6 million years old. About 2 mi of the line.
Clay, sand. Age: Cretaceous, 66 to 145 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 Georgetown-Quitman County unified government reaches the Gulf of America by way of Smithee Jack Creek, Pataula Creek, the Chattahoochee and the Apalachicola: about 210 river miles.
Lake on the way: Walter F George Reservoir.
110 miles of the trip are on the Apalachicola.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Georgetown-Quitman County unified government; river miles along the main stem, rounded.
