The Coker Creek 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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Coker Creek’s center stands about 1,640 ft above sea level. Within three miles the land runs from 1,460 ft to 3,120 ft, a difference of 1,660 ft: steep hill country. The highest named summit within 15 miles is Little Haw Knob, about 5,160 ft, 15 miles east-northeast.
Under the town center the state geologic map shows Walden Creek Group, including Sandsuck Formation, Wilhite Formation, Shields Formation, and Licklog Formation (shale), from the Precambrian.
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 7×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale. Age: Precambrian. About 10 mi of the line.
Graywacke. Age: Precambrian. About 9 mi of the line.
Shale. Age: Precambrian. About 3 mi of the line.
Slate, metasiltstone. Age: Neoproterozoic, 542 to 1,000 million years old. About 1 mi of the line.
Conglomerate. Age: Cambrian, 487 to 542 million years old. About 0.5 mi of the line.
Quartzite. Age: Cambrian, 487 to 542 million years old. About 0.5 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 Coker Creek reaches the Gulf of America by way of Conasauga Creek, the Hiwassee, the Tennessee, the Ohio and the Mississippi: about 1,600 river miles.
Lakes on the way: Guntersville Lake, White Lake (historical), Pickwick Lake and Cummings Lake.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Coker Creek; river miles along the main stem, rounded.
