The Foster 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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Showers likely; cooler
Partly cloudy; warmer
Sunny
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Foster’s center stands about 1,020 ft above sea level. Within three miles the land runs from 950 ft to 1,260 ft, a difference of 310 ft: rolling country. The highest named summit within 15 miles is Table Hill, about 1,300 ft, 4 miles north.
Under the town center the state geologic map shows Garber Sandstone (sandstone, conglomerate), from the Permian, 252 to 299 million years old.
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 49×. 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.
Sandstone. Age: Permian, 252 to 299 million years old. About 5 mi of the line.
Shale, sandstone, conglomerate. Age: Permian, 252 to 299 million years old. About 3 mi of the line.
Black-shale. Age: Late Devonian, 359 to 384 million years old. About 3 mi of the line.
Shale, sandstone, siltstone. Age: Permian, 252 to 299 million years old. About 2 mi of the line.
Shale. Age: Permian, 252 to 299 million years old. About 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. 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 Foster reaches the Gulf of America by way of Honey Creek, Salt Creek, Sandy Bear Creek, the Washita, the Red River, the Atchafalaya and the Lower Atchafalaya: about 950 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 Foster; river miles along the main stem, rounded.
