The Cavour 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.
76° on Nov. 16, 2001, the hottest reading for this week of the year since 1881. Next is 75° in 1953.
Cavour’s center stands about 1,300 ft above sea level. Within three miles the land runs from 1,290 ft to 1,340 ft, a difference of 50 ft: nearly flat ground.
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.
Shale, bentonite. Age: Late Cretaceous, 66 to 100 million years old. About 18 mi of the line.
Chalk, marlstone, shale. Age: Late Cretaceous, 66 to 100 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 Cavour reaches the Gulf of America by way of the James, the Missouri and the Mississippi: about 2,200 river miles.
1,170 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Cavour; river miles along the main stem, rounded.
Cavour has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 6° in January. A normal year brings about 44 inches of snow; with the rain, that comes to about 23 inches of water.
On November 14 Cavour normally reaches 45° and falls to 23°. The record high is 74°, in 2025; the record low −18°, in 1959. The most rain on this date, 0.44 in, fell in 1928.
Normals 1991–2020 and records since 1881 from the Huron Area threaded record (Huron Regional Airport, 9 miles west). NOAA, through RCC-ACIS.