The Oshkosh 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.
82° on Nov. 12, 1999, the hottest reading for this week of the year since 1913. Next is 82° in 2025.
Oshkosh’s center stands about 3,400 ft above sea level. Within three miles the land runs from 3,360 ft to 3,660 ft, a difference of 300 ft: rolling country. The highest named summit within 15 miles is Wildhorse Hill, about 3,960 ft, 15 miles north-northeast.
Under the town center the state geologic map shows White River Group (clay), from the Early Oligocene to Late Oligocene, 23 to 34 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 33×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Siltstone-mudstone, conglomerate-sandstone. Age: Miocene, 5.3 to 23 million years old. About 13 mi of the line.
Clay. Age: Early Oligocene to Late Oligocene, 23 to 34 million years old. About 11 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 Oshkosh reaches the Gulf of America by way of the North Platte, the Platte, the Missouri and the Mississippi: about 2,180 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 Oshkosh; river miles along the main stem, rounded.
Oshkosh has a cold semi-arid climate. Summer afternoons average 88° in July; winter nights fall to about 13° in January. A normal year brings about 28 inches of snow; with the rain, that comes to about 18 inches of water.
On November 14 Oshkosh normally reaches 52° and falls to 22°. The record high is 80°, in 1990; the record low −12°, in 1940. The most rain on this date, 0.26 in, fell in 1921.
Normals 1991–2020 and records since 1913 at Oshkosh, here. NOAA, through RCC-ACIS.