The Westwood Shores 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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Westwood Shores’s center stands about 180 ft above sea level. Within three miles the land runs from 130 ft to 280 ft, a difference of 150 ft: gently rolling country.
Under the town center the state geologic map shows Whitsett Formation (clay, sand), from the Late Eocene to Early Oligocene, 28 to 38 million years old.
The section below crosses 7 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.
Clay, sand. Age: Late Eocene to Early Oligocene, 28 to 38 million years old. About 7 mi of the line.
Sandstone-mudstone. Age: Late Eocene, 34 to 38 million years old. About 5 mi of the line.
Mudstone, sand. Age: Oligocene, 23 to 34 million years old. About 4 mi of the line.
Clay, sandstone. Age: Miocene, 5.3 to 23 million years old. About 3 mi of the line.
Sand. Age: Pleistocene, less than 2.6 million years old. About 0.8 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 0.8 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit 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 Westwood Shores reaches Galveston Bay and the Gulf of America by way of Woodlands Golf Course Lake and the Trinity: about 150 river miles.
Lake on the way: Woodlands Golf Course Lake.
120 miles of the trip are on the Trinity.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Westwood Shores; river miles along the main stem, rounded.
