The Sims Chapel 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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Sims Chapel’s center stands about 160 ft above sea level. Within three miles the land runs from 80 ft to 230 ft, a difference of 150 ft: gently rolling country. The highest named summit within 15 miles is Dwight Hill, about 340 ft, 9 miles southwest.
Under the town center the state geologic map shows Miocene Series undifferentiated (sand, clay), from the Miocene to Pliocene, 2.6 to 23 million years old.
The section below crosses 2 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, clay. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 16 mi of the line.
Sand. Age: Holocene, less than 12,000 years old. About 8 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 Sims Chapel reaches Mobile Bay and the Gulf of America by way of Bates Creek, the Tombigbee and the Mobile: about 75 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Sims Chapel; river miles along the main stem, rounded.
