The Bellefontaine 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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1° on Nov. 16, 1933, the coldest reading for this week of the year since 1894. Next is 4° in 2019.
Bellefontaine’s center stands about 1,250 ft above sea level. Within three miles the land runs from 1,090 ft to 1,510 ft, a difference of 420 ft: hilly country. The highest named summit within 15 miles is Campbell Hill, about 1,550 ft, 2 miles east-northeast.
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 35×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Dolostone. Age: Silurian, 422 to 445 million years old. About 10 mi of the line.
Dolostone. Age: Devonian, 359 to 422 million years old. About 4 mi of the line.
Shale, black-shale. Age: Devonian, 359 to 422 million years old. About 3 mi of the line.
Dolostone. Age: Silurian, 428 to 445 million years old. About 3 mi of the line.
Dolostone, limestone, shale. Age: Silurian, 422 to 445 million years old. About 1 mi of the line.
Shale, dolostone, limestone. Age: Ordovician, 445 to 487 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. 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 Bellefontaine reaches the Gulf of America by way of Blue Jacket Creek, Bokengehalas Creek, the Great Miami, the Ohio and the Mississippi: about 1,610 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 Bellefontaine; river miles along the main stem, rounded.
Bellefontaine has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 18° in January. About 43 inches of rain fall in a normal year.
On November 14 Bellefontaine normally reaches 50° and falls to 32°. The record high is 72°, in 1931; the record low 8°, in 2019. The most rain on this date, 1.77 in, fell in 1993.
Normals 1991–2020 and records since 1894 at Bellefontaine, here. NOAA, through RCC-ACIS.
