The Conneaut 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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75° on Nov. 11, 2020, the hottest reading for this week of the year since 1996. Next is 68° in 2005.
Conneaut’s center stands about 1,130 ft above sea level. Within three miles the land runs from 1,000 ft to 1,250 ft, a difference of 250 ft: rolling country. The highest named summit within 15 miles is Round Top, about 1,540 ft, 14 miles east.
Under the town center the state geologic map shows Berea Sandstone through Venango Formation, undivided (shale), from the Late Devonian, 359 to 384 million years old.
The section below crosses 4 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.
Shale. Age: Late Devonian, 359 to 384 million years old. About 10 mi of the line.
Shale, black-shale. Age: Devonian, 359 to 422 million years old. About 8 mi of the line.
Siltstone, shale. Age: Carboniferous, 324 to 359 million years old. About 5 mi of the line.
Sandstone, shale. Age: Devonian, 359 to 422 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.
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 Conneaut reaches the Gulf of America by way of the Pymatuning Swamp (historical), the Shenango, the Beaver, the Ohio and the Mississippi: about 2,020 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 Conneaut; river miles along the main stem, rounded.
Conneaut has a warm-summer humid continental climate. Summer afternoons average 80° in July; winter nights fall to about 17° in January. A normal year brings about 111 inches of snow; with the rain, that comes to about 48 inches of water.
On November 14 Conneaut normally reaches 48° and falls to 33°. The record high is 67°, in 2010; the record low 17°, in 1996. The most rain on this date, 0.53 in, fell in 2021.
Normals 1991–2020 and records since 1996 at Springboro 3 WNW, 8 miles north-northeast, 120 ft lower. NOAA, through RCC-ACIS.
