The Cataract 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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Cataract’s center stands about 860 ft above sea level. Within three miles the land runs from 800 ft to 1,110 ft, a difference of 310 ft: rolling country. The highest named summit within 15 miles is Wadels Hill, about 1,410 ft, 6 miles southwest.
Under the town center the state geologic map shows Cambrian, undivided (sandstone), from the Cambrian, 487 to 542 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 36×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone. Age: Cambrian, 487 to 542 million years old. About 18 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 6 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 Cataract reaches the Gulf of America by way of Big Creek, the Black River, the Dodge Chute and the Mississippi: about 1,740 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Cataract; river miles along the main stem, rounded.
