The Pennington 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.
Mostly sunny
Mostly sunny; warmer
Partly cloudy
Sunny
Mostly sunny
Mostly sunny
Mostly sunny
Pennington’s center stands about 120 ft above sea level. Within three miles the land runs from 50 ft to 250 ft, a difference of 200 ft: gently rolling country.
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 60×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Clay, sand. Age: Paleocene, 56 to 66 million years old. About 9 mi of the line.
Sand, clay. Age: Paleocene, 56 to 66 million years old. About 7 mi of the line.
Sand. Age: Holocene, less than 12,000 years old. About 5 mi of the line.
Silt, clay. Age: Paleocene, 56 to 66 million years old. About 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 Pennington reaches Mobile Bay and the Gulf of America by way of Morgan Branch, the Tombigbee and the Mobile: about 180 river miles.
120 miles of the trip are on the Tombigbee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Pennington; river miles along the main stem, rounded.
