The Sherwood 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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72° on Nov. 11, 2022, the hottest reading for this week of the year since 1924. Next is 67° in 2001.
Sherwood’s center stands about 890 ft above sea level. Within three miles the land runs from 740 ft to 1,010 ft, a difference of 270 ft: rolling country.
Under the town center the state geologic map shows Maquoketa Formation (shale, dolostone), from the Ordovician, 445 to 487 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 44×. 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: Ordovician, 445 to 487 million years old. About 12 mi of the line.
Dolostone. Age: Silurian, 422 to 445 million years old. About 8 mi of the line.
Shale, dolostone. Age: Ordovician, 445 to 487 million years old. About 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 Sherwood reaches Lake Michigan by way of Lake Winnebago 6124 and the Fox River: about 50 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
Lake on the way: Lake Winnebago 6124.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Sherwood; river miles along the main stem, rounded.
Sherwood has a warm-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 10° in January. A normal year brings about 43 inches of snow; with the rain, that comes to about 32 inches of water.
Normals 1991–2020 and records since 1924 at Brillion, 9 miles east. NOAA, through RCC-ACIS.
