The Radar Base 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.
Mostly sunny
Partly cloudy; warmer
Mostly cloudy; cooler
Mostly cloudy
Mostly cloudy
Mostly cloudy
Partly cloudy
Radar Base’s center stands about 850 ft above sea level. Within three miles the land runs from 720 ft to 890 ft, a difference of 170 ft: gently rolling country.
Under the town center the state geologic map shows Uvalde Gravel, from the Late Pliocene to Pleistocene, less than 3.6 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 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.
Gravel. Age: Late Pliocene to Pleistocene, less than 3.6 million years old. About 13 mi of the line.
Claystone. Age: Late Cretaceous, 66 to 100 million years old. About 2 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 0.7 mi of the line.
Sandstone. Age: Late Cretaceous, 72 to 84 million years old. About 0.6 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 Radar Base reaches the Gulf of America by way of the Rio Grande: about 510 river miles.
Lake on the way: Paz Ramirez Lake.
270 miles of the trip are on the Rio Grande.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Radar Base; river miles along the main stem, rounded.
