The Redford 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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Redford’s center stands about 2,530 ft above sea level. Within three miles the land runs from 2,490 ft to 3,330 ft, a difference of 840 ft: hilly country. The highest named summit within 15 miles is Oso Mountain, about 5,040 ft, 10 miles east.
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 8×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Trachyte, basalt, rhyolite. Age: Late Oligocene to Oligocene, 23 to 28 million years old. About 9 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 2 mi of the line.
Coarse-detrital. Age: Pleistocene, less than 2.6 million years old. About 1 mi of the line.
Fine-detrital, sand. Age: Pliocene to Pleistocene, less than 5.3 million years old. About 1 mi of the line.
Sandstone, conglomerate. Age: Oligocene, 23 to 34 million years old. About 0.7 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 Redford reaches the Gulf of America by way of the Rio Grande: about 940 river miles.
Lakes on the way: Paz Ramirez Lake and Amistad Reservoir.
330 miles of the trip are on the Rio Grande.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Redford; river miles along the main stem, rounded.
