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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2° on Nov. 13, 2019, the coldest reading for this week of the year since 1981. Next is 9° in 1986.
Foster’s center stands about 640 ft above sea level. Within three miles the land runs from 490 ft to 680 ft, a difference of 190 ft: gently rolling country.
Under the town center the state geologic map shows Raccoon Creek Group (shale, sandstone), from the Carboniferous, 299 to 324 million years old.
The section below crosses 2 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.
Shale, sandstone. Age: Carboniferous, 299 to 324 million years old. About 21 mi of the line.
Shale, sandstone. Age: Early Pennsylvanian to Middle Pennsylvanian, 307 to 324 million years old. About 4 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 Foster reaches the Gulf of America by way of North Fork Spring Creek, Spring Creek, Big Bayou, the Wabash River Old Channel, the Old Channel Wabash, the Ohio and the Mississippi: about 1,360 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Foster; river miles along the main stem, rounded.
Foster has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 17° in January. A normal year brings about 19 inches of snow; with the rain, that comes to about 39 inches of water.
On November 14 Foster normally reaches 53° and falls to 32°. The record high is 73°, in 1989; the record low 8°, in 2019. The most rain on this date, 1.07 in, fell in 1993.
Normals 1991–2020 and records since 1981 at Perrysville 4 WNW, 5 miles south-southwest. NOAA, through RCC-ACIS.
