The Hiram 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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3° on Nov. 16, 1933, the coldest reading for this week of the year since 1893. Next is 11° in 1911.
Hiram’s center stands about 1,250 ft above sea level. Within three miles the land runs from 990 ft to 1,320 ft, a difference of 330 ft: rolling country. The highest named summit within 15 miles is Sugarloaf, about 1,450 ft, 6 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 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 38×. 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 16 mi of the line.
Shale, black-shale. Age: Devonian, 359 to 422 million years old. About 3 mi of the line.
Sandstone, shale. Age: Devonian, 359 to 422 million years old. About 3 mi of the line.
Shale, siltstone, sandstone. Age: Devonian to Carboniferous, 324 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.
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 Hiram reaches the Gulf of America by way of Silver Creek, Eagle Creek, the Mahoning, the Beaver, the Ohio and the Mississippi: about 2,010 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 Hiram; river miles along the main stem, rounded.
Hiram 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 63 inches of snow; with the rain, that comes to about 44 inches of water.
On November 14 Hiram normally reaches 49° and falls to 31°. The record high is 79°, in 1926; the record low 13°, in 2019. The most rain on this date, 1.15 in, fell in 1972.
Normals 1991–2020 and records since 1893 at Hiram, here. NOAA, through RCC-ACIS.
