The Meridian 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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Meridian’s center stands about 760 ft above sea level. Within three miles the land runs from 720 ft to 1,040 ft, a difference of 320 ft: rolling country. The highest named summit within 15 miles is Spencer Mountain, about 1,250 ft, 13 miles west-southwest.
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 33×. 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. Age: Early Cretaceous, 100 to 145 million years old. About 11 mi of the line.
Limestone, marl. Age: Early Cretaceous, 100 to 145 million years old. About 7 mi of the line.
Limestone, shale. Age: Early Cretaceous, 100 to 145 million years old. About 6 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 0.3 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 Meridian reaches the Gulf of America by way of the North Bosque, the South Bosque and the Brazos: about 480 river miles.
Lake on the way: Waco Lake.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Meridian; river miles along the main stem, rounded.
