The Rains 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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Rains’s center stands about 90 ft above sea level. Within three miles the land runs from 40 ft to 120 ft, a difference of 80 ft: gently rolling country.
Under the town center the state geologic map shows Bear Bluff Formation (sand, limestone), from the Tertiary, 2.6 to 66 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 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, limestone. Age: Tertiary, 2.6 to 66 million years old. About 14 mi of the line.
Sand, gravel. Age: Quaternary, less than 2.6 million years old. About 4 mi of the line.
Limestone, sand. Age: Pleistocene, less than 2.6 million years old. About 4 mi of the line.
Sand, clay. Age: Quaternary, less than 2.6 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 Rains reaches the Atlantic Ocean by way of Little Reedy Creek, Reedy Creek, the Little Pee Dee, the Great Pee Dee, Schooner Creek and the Waccamaw: about 75 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Rains; river miles along the main stem, rounded.
