The Bolton 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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Bolton’s center stands about 60 ft above sea level. Within three miles the land runs from 50 ft to 110 ft, a difference of 60 ft: nearly flat ground.
Under the town center the state geologic map shows Peedee Formation (sand, clay), from the Cretaceous, 66 to 145 million years old.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 64×. 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, clay. Age: Cretaceous, 66 to 145 million years old. About 24 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 Bolton reaches the Atlantic Ocean by way of the Waccamaw: about 150 river miles.
Lake on the way: Waccamaw, Lake.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Bolton; river miles along the main stem, rounded.
