The Angelo 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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Angelo’s center stands about 1,100 ft above sea level. Within three miles the land runs from 800 ft to 1,310 ft, a difference of 510 ft: hilly country. The highest named summit within 15 miles is Wadels Hill, about 1,410 ft, 11 miles northwest.
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 29×. 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 21 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 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 Angelo reaches the Gulf of America by way of Farmers Valley Creek, the La Crosse and the Mississippi: about 1,720 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Angelo; river miles along the main stem, rounded.
