The Dekorra 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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Mostly sunny; warmer
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73° on Nov. 16, 1953, the hottest reading for this week of the year since 1889. Next is 72° in 1964.
Dekorra’s center stands about 880 ft above sea level. Within three miles the land runs from 770 ft to 1,010 ft, a difference of 240 ft: rolling country. The highest named summit within 15 miles is Sauk Point, about 1,630 ft, 10 miles west.
Under the town center the state geologic map shows Cambrian, undivided (sandstone), from the Cambrian, 487 to 542 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 26×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone. Age: Cambrian, 487 to 542 million years old. About 19 mi of the line.
Quartzite. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 3 mi of the line.
Sandstone. Age: Ordovician, 445 to 487 million years old. About 0.9 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 0.4 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 Dekorra reaches the Gulf of America by way of the Wisconsin and the Mississippi: about 1,720 river miles.
Lake on the way: Lake Wisconsin.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Dekorra; river miles along the main stem, rounded.
Dekorra has a hot-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 10° in January. A normal year brings about 39 inches of snow; with the rain, that comes to about 38 inches of water.
On November 14 Dekorra normally reaches 45° and falls to 29°. The record high is 72°, in 1999; the record low 1°, in 1916. The most rain on this date, 0.63 in, fell in 1902.
Normals 1991–2020 and records since 1889 at Portage Wwtp, 5 miles north-northeast. NOAA, through RCC-ACIS.
