The Suwanee 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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Suwanee’s center stands about 1,000 ft above sea level. Within three miles the land runs from 920 ft to 1,170 ft, a difference of 250 ft: rolling country. The highest named summit within 15 miles is Sawnee Mountain, about 1,940 ft, 14 miles north-northwest.
Under the town center the state geologic map shows Metagraywacke/ Mica Schist (metagraywacke, mica-schist), from the Precambrian to Paleozoic.
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 54×. 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 9 mi of the line.
Metagraywacke, mica-schist. Age: Precambrian to Paleozoic. About 8 mi of the line.
Gneiss. Age: Precambrian to Paleozoic. About 7 mi of the line.
Mylonite. Age: Precambrian to Paleozoic. About 0.3 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 Suwanee reaches the Gulf of America by way of Suwanee Creek, the Chattahoochee and the Apalachicola: about 450 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 Suwanee; river miles along the main stem, rounded.
