The Ravenna 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 1948. Next is 68° in 2022.
Ravenna’s center stands about 1,110 ft above sea level. Within three miles the land runs from 1,030 ft to 1,200 ft, a difference of 170 ft: gently rolling country. The highest named summit within 15 miles is Derthick Hill, about 1,390 ft, 11 miles north-northeast.
Under the town center the state geologic map shows Allegheny and Pottsville Groups, Undivided (shale, siltstone), from the Carboniferous, 299 to 324 million years old.
The section below crosses 3 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 62×. 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, siltstone. Age: Carboniferous, 299 to 324 million years old. About 22 mi of the line.
Sandstone, shale. Age: Devonian, 359 to 422 million years old. About 1 mi of the line.
Shale, siltstone, sandstone. Age: Devonian to Carboniferous, 324 to 422 million years old. About 0.8 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.
Ravenna straddles the St. Lawrence Divide. Rain on the east side runs to the Gulf of America; most of the rest goes to Lake Erie.
From the center of town, a raindrop reaches Lake Erie by way of Breakneck Creek and the Cuyahoga: about 65 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic. One that lands on the east side reaches the Gulf of America by way of the West Branch Mahoning, the Mahoning, the Beaver, the Ohio and the Mississippi: about 2,020 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Ravenna; river miles along the main stem, rounded.
Ravenna has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 17° in January. A normal year brings about 45 inches of snow; with the rain, that comes to about 43 inches of water.
Normals 1991–2020 and records since 1948 at Ravenna 2 S, 3 miles southwest. NOAA, through RCC-ACIS.
