The River Falls 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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River Falls’s center stands about 270 ft above sea level. Within three miles the land runs from 150 ft to 340 ft, a difference of 190 ft: gently rolling country.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 58×. 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. Age: Eocene, 34 to 56 million years old. About 9 mi of the line.
Clay. Age: Eocene to Miocene, 5.3 to 56 million years old. About 6 mi of the line.
Clay, limestone. Age: Eocene, 34 to 56 million years old. About 3 mi of the line.
Sand. Age: Holocene, less than 12,000 years old. About 3 mi of the line.
Claystone. Age: Eocene, 34 to 56 million years old. About 2 mi of the line.
Sand, clay. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 0.7 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 River Falls reaches Pensacola Bay and the Gulf of America by way of the Conecuh, the Escambia and the Dead: about 130 river miles.
75 miles of the trip are on the Conecuh.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of River Falls; river miles along the main stem, rounded.
