The Latham 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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Latham’s center stands about 1,470 ft above sea level. Within three miles the land runs from 1,420 ft to 1,570 ft, a difference of 150 ft: gently rolling country. The highest named summit within 15 miles is Temple Knob, about 1,630 ft, 14 miles northeast.
Under the town center the state geologic map shows Chase Group (shale, limestone), from the Permian, 252 to 299 million years old.
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 42×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale, limestone. Age: Permian, 252 to 299 million years old. About 17 mi of the line.
Limestone, shale. Age: Permian, 252 to 299 million years old. About 4 mi of the line.
Shale. Age: Carboniferous, 299 to 324 million years old. About 2 mi of the line.
Shale. Age: Carboniferous, 299 to 324 million years old. About 1 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 Latham reaches the Gulf of America by way of Rock Creek, the Walnut, the Arkansas and the Mississippi: about 1,340 river miles.
Lakes on the way: Murray Lake and Ozark Lake.
600 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Latham; river miles along the main stem, rounded.
