The Roswell 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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Roswell’s center stands about 1,090 ft above sea level. Within three miles the land runs from 860 ft to 1,190 ft, a difference of 330 ft: rolling country. The highest named summit within 15 miles is Kennesaw Mountain, about 1,780 ft, 13 miles west-southwest.
Under the town center the state geologic map shows Mica Schist/ Gneiss/ Amphibolite (gneiss, mica-schist, amphibolite), from the Precambrian to Paleozoic.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 43×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Amphibolite, biotite-gneiss, mica-schist. Age: Precambrian to Paleozoic. About 8 mi of the line.
Hornblende-gneiss, amphibolite. Age: Precambrian to Paleozoic. About 5 mi of the line.
Gneiss, mica-schist, amphibolite. Age: Precambrian to Paleozoic. About 4 mi of the line.
Schist. Age: Precambrian to Paleozoic. About 3 mi of the line.
Gneiss. Age: Precambrian to Paleozoic. About 2 mi of the line.
Metagraywacke, mica-schist. Age: Precambrian to Paleozoic. 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. 1 smaller unit 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 Roswell reaches the Gulf of America by way of Hog Wallow Creek, Big Creek, the Chattahoochee and the Apalachicola: about 430 river miles.
Lakes on the way: Walter F George Reservoir, West Point Lake and Bartletts Ferry Lake.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Roswell; river miles along the main stem, rounded.
