The Haviland 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. 17, 1963, the hottest reading for this week of the year since 1914. Next is 73° in 1930.
Haviland’s center stands about 730 ft above sea level. Within three miles the land runs from 720 ft to 740 ft, a difference of 20 ft: nearly flat ground.
Under the town center the state geologic map shows Salina Group (dolostone), from the Silurian, 422 to 445 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 64×. 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 18 mi of the line.
Dolostone. Age: Devonian, 359 to 422 million years old. About 6 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 Haviland reaches Lake Erie by way of Prairie Creek, the Little Auglaize, the Auglaize and the Maumee: about 100 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
65 miles of the trip are on the Maumee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Haviland; river miles along the main stem, rounded.
Haviland 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 24 inches of snow; with the rain, that comes to about 37 inches of water.
On November 14 Haviland normally reaches 50° and falls to 32°. The record high is 73°, in 1956; the record low 7°, in 1986. The most rain on this date, 1.42 in, fell in 1972.
Normals 1991–2020 and records since 1914 at Paulding, 7 miles north. NOAA, through RCC-ACIS.
