The South Shenango 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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77° on Nov. 13, 1949, the hottest reading for this week of the year since 1931. Next is 77° in 2020.
South Shenango’s center stands about 1,270 ft above sea level. Within three miles the land runs from 1,000 ft to 1,380 ft, a difference of 380 ft: rolling country.
Under the town center the state geologic map shows Cuyahoga Group (siltstone, shale), from the Carboniferous, 324 to 359 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 43×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Siltstone, shale. Age: Carboniferous, 324 to 359 million years old. About 6 mi of the line.
Sandstone. Age: Carboniferous, 324 to 359 million years old. About 5 mi of the line.
Shale, siltstone, sandstone. Age: Devonian to Carboniferous, 324 to 422 million years old. About 5 mi of the line.
Shale. Age: Late Devonian, 359 to 384 million years old. About 3 mi of the line.
Sandstone, shale. Age: Devonian, 359 to 422 million years old. About 2 mi of the line.
Shale, black-shale. Age: Devonian, 359 to 422 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 South Shenango reaches the Gulf of America by way of the Pymatuning Swamp (historical), the Shenango, the Beaver, the Ohio and the Mississippi: about 2,010 river miles.
Lake on the way: Pymatuning Swamp (historical).
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of South Shenango; river miles along the main stem, rounded.
South Shenango has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 16° in January. A normal year brings about 62 inches of snow; with the rain, that comes to about 44 inches of water.
On November 14 South Shenango normally reaches 50° and falls to 32°. The record high is 70°, in 1989; the record low 13°, in 1933. The most rain on this date, 1.22 in, fell in 1972.
Normals 1991–2020 and records since 1931 at Jamestown 2 NW, 3 miles south-southwest, 240 ft lower. NOAA, through RCC-ACIS.
