The Little River-Academy 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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Little River-Academy’s center stands about 490 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 Dana Peak, about 850 ft, 15 miles west-northwest.
The section below crosses 10 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.
Claystone, limestone. Age: Early Cretaceous, 100 to 145 million years old. About 7 mi of the line.
Claystone. Age: Late Cretaceous, 66 to 72 million years old. About 6 mi of the line.
Clay, siltstone-mudstone. Age: Late Cretaceous, 66 to 100 million years old. About 3 mi of the line.
Limestone, carbonate. Age: Late Cretaceous, 66 to 72 million years old. About 2 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 2 mi of the line.
Gravel. Age: Pleistocene, less than 2.6 million years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 4 smaller units along the line are not listed.
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 Little River-Academy reaches the Gulf of America by way of Boggy Creek, the Little River and the Brazos: about 410 river miles.
320 miles of the trip are on the Brazos.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Little River-Academy; river miles along the main stem, rounded.
