The Knapp 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.
Mostly sunny
Mostly sunny; warmer
Partly cloudy
Partly cloudy
Partly cloudy
Partly cloudy
Showers likely
73° on Nov. 12, 1964, the hottest reading for this week of the year since 1903. Next is 72° in 1953.
Knapp’s center stands about 1,000 ft above sea level. Within three miles the land runs from 970 ft to 1,210 ft, a difference of 240 ft: rolling country. The highest named summit within 15 miles is Saddle Mound, about 1,360 ft, 6 miles north.
Under the town center the state geologic map shows Cambrian, undivided (sandstone), from the Cambrian, 487 to 542 million years old.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 46×. 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 24 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 Knapp reaches the Gulf of America by way of McKenna Creek, Hawkins Creek, Morrison Creek, the Black River, the Dodge Chute and the Mississippi: about 1,780 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Knapp; river miles along the main stem, rounded.
Knapp has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 5° in January. A normal year brings about 48 inches of snow; with the rain, that comes to about 35 inches of water.
On November 14 Knapp normally reaches 43° and falls to 25°. The record high is 69°, in 1999; the record low 0°, in 1986. The most rain on this date, 0.55 in, fell in 1909.
Normals 1991–2020 and records since 1903 at Mather 3 NW, 10 miles southeast. NOAA, through RCC-ACIS.
