The Celina 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.
Partly cloudy
Showers likely; cooler
Chance of showers; warmer
Sunny; warmer
Partly cloudy
Partly cloudy
Partly cloudy
Celina’s center stands about 700 ft above sea level. Within three miles the land runs from 600 ft to 800 ft, a difference of 200 ft: gently rolling country.
Under the town center the state geologic map shows Eagle Ford Formation (black-shale, siltstone), from the Late Cretaceous, 66 to 100 million years old.
The section below crosses 5 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.
Marlstone, chalk. Age: Late Cretaceous, 66 to 100 million years old. About 11 mi of the line.
Black-shale, siltstone. Age: Late Cretaceous, 66 to 100 million years old. About 11 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 2 mi of the line.
Sandstone-mudstone. Age: Late Cretaceous, 66 to 100 million years old. About 0.3 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 0.2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
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 Celina reaches Galveston Bay and the Gulf of America by way of Little Elm Creek, the Elm Fork Trinity and the Trinity: about 510 river miles.
Lakes on the way: Woodlands Golf Course Lake and Lake Lewisville.
270 miles of the trip are on the Trinity.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Celina; river miles along the main stem, rounded.
