The McCool 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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McCool’s center stands about 500 ft above sea level. Within three miles the land runs from 430 ft to 590 ft, a difference of 160 ft: gently rolling country. The highest named summit within 15 miles is Ironstone Hills, about 690 ft, 4 miles southeast.
Under the town center the state geologic map shows Wilcox formation (sand, clay), from the Eocene, 34 to 56 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 64×. 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, clay. Age: Eocene, 34 to 56 million years old. About 15 mi of the line.
Claystone, clay. Age: Eocene, 34 to 56 million years old. About 9 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 McCool reaches the Gulf of America by way of the Yockanookany and the Pearl: about 410 river miles.
Lake on the way: Cypress Lake.
310 miles of the trip are on the Pearl.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of McCool; river miles along the main stem, rounded.
