The Erin Springs 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.
Chance of showers
Showers likely; cooler
Chance of showers; warmer
Sunny
Chance of showers
Mostly cloudy
Chance of showers
Erin Springs’s center stands about 1,000 ft above sea level. Within three miles the land runs from 960 ft to 1,140 ft, a difference of 180 ft: gently rolling country. The highest named summit within 15 miles is Table Hill, about 1,300 ft, 11 miles south-southeast.
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 56×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Black-shale. Age: Late Devonian, 359 to 384 million years old. About 12 mi of the line.
Sandstone, conglomerate. Age: Permian, 252 to 299 million years old. About 7 mi of the line.
Conglomerate, shale, siltstone. Age: Permian, 252 to 299 million years old. About 3 mi of the line.
Sandstone, siltstone. Age: Permian, 252 to 299 million years old. About 1 mi of the line.
Shale. Age: Permian, 252 to 299 million years old. About 0.6 mi of the line.
Shale, sandstone, siltstone. Age: Permian, 252 to 299 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. 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 Erin Springs reaches the Gulf of America by way of the Washita, the Red River, the Atchafalaya and the Lower Atchafalaya: about 1,000 river miles.
680 miles of the trip are on the Red River.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Erin Springs; river miles along the main stem, rounded.
