The Grow 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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67° on Nov. 15, 1999, the hottest reading for this week of the year since 1956. Next is 65° in 2001.
Grow’s center stands about 1,170 ft above sea level. Within three miles the land runs from 1,140 ft to 1,250 ft, a difference of 110 ft: gently rolling country.
Under the town center the state geologic map shows Felsic volcanic and volcanogenic rocks (metavolcanic), from the Paleoproterozoic, 1.6 to 2.5 billion years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 49×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Metavolcanic. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 9 mi of the line.
Basalt, basaltic-andesite. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 5 mi of the line.
Sandstone. Age: Cambrian, 487 to 542 million years old. About 5 mi of the line.
Metavolcanic. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 4 mi of the line.
Granite, tonalite, gneiss. Age: Paleoproterozoic, 1.8 to 1.9 billion years old. About 0.5 mi of the line.
Quartzite, conglomerate. Age: Paleoproterozoic, 1.6 to 2.5 billion 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 Grow reaches the Gulf of America by way of Main Creek, the Chippewa and the Mississippi: about 1,870 river miles.
Lakes on the way: Lake Wissota and Holcombe Flowage.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Grow; river miles along the main stem, rounded.
Grow has a warm-summer humid continental climate. Summer afternoons average 79° in July; winter nights fall to about 2° in January. About 34 inches of rain fall in a normal year.
On November 14 Grow normally reaches 40° and falls to 25°. The record high is 64°, in 1990; the record low −1°, in 1996. The most rain on this date, 0.13 in, fell in 2000.
Normals 1991–2020 and records since 1956 at Big Falls Hydro, 9 miles north. NOAA, through RCC-ACIS.
