The Katie 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
Chance of showers; warmer
Sunny
Chance of showers
Mostly cloudy
Chance of showers
Katie’s center stands about 970 ft above sea level. Within three miles the land runs from 870 ft to 1,040 ft, a difference of 170 ft: gently rolling country. The highest named summit within 15 miles is Table Hill, about 1,300 ft, 10 miles northwest.
The section below crosses 9 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 36×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, conglomerate. Age: Permian, 252 to 299 million years old. About 8 mi of the line.
Shale. Age: Permian, 252 to 299 million years old. About 4 mi of the line.
Shale, sandstone, conglomerate. Age: Permian, 252 to 299 million years old. About 4 mi of the line.
Limestone, dolostone. Age: Cambrian, 487 to 497 million years old. About 3 mi of the line.
Limestone, conglomerate, dolostone. Age: Early Ordovician, 471 to 487 million years old. About 1 mi of the line.
Black-shale. Age: Late Devonian, 359 to 384 million years old. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 3 smaller units 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 Katie reaches the Gulf of America by way of Sandy Creek, Sandy Bear Creek, the Washita, the Red River, the Atchafalaya and the Lower Atchafalaya: about 940 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 Katie; river miles along the main stem, rounded.
