The Beaver Dam 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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Beaver Dam’s center stands about 410 ft above sea level. Within three miles the land runs from 390 ft to 590 ft, a difference of 200 ft: gently rolling country. The highest named summit within 15 miles is Rattlesnake Knob, about 790 ft, 12 miles east.
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 52×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Siltstone. Age: Carboniferous, 299 to 324 million years old. About 8 mi of the line.
Siltstone. Age: Carboniferous, 299 to 324 million years old. About 7 mi of the line.
Sand, silt. Age: Pleistocene to Holocene, less than 2.6 million years old. About 6 mi of the line.
Siltstone. Age: Carboniferous, 299 to 324 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 Beaver Dam reaches the Gulf of America by way of Muddy Creek, the Rough, the Green River, the Ohio and the Mississippi: about 1,270 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Beaver Dam; river miles along the main stem, rounded.
