The Kennett 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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80° on Nov. 15, 1993, the hottest reading for this week of the year since 1894. Next is 78° in 1973.
Kennett’s center stands about 270 ft above sea level. Within three miles the land runs from 190 ft to 480 ft, a difference of 290 ft: rolling country. The highest named summit within 15 miles is Harmony Hill, about 530 ft, 10 miles north.
The section below crosses 9 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 29×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gneiss. Age: Paleozoic, 252 to 542 million years old. About 5 mi of the line.
Mica-schist. Age: Paleozoic, 252 to 542 million years old. About 5 mi of the line.
Gneiss. Age: Precambrian. About 4 mi of the line.
Schist, gneiss. Age: Paleozoic, 252 to 542 million years old. About 4 mi of the line.
Quartzite. Age: Paleozoic, 252 to 542 million years old. About 3 mi of the line.
Mica-schist, quartzite. Age: Paleozoic, 252 to 542 million years old. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 3 smaller units along the line are not listed.
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 Kennett reaches Delaware Bay and the Atlantic Ocean by way of Red Clay Creek, White Clay Creek, the Christina and the Delaware: about 65 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Kennett; river miles along the main stem, rounded.
Kennett has a humid subtropical climate. Summer afternoons average 87° in July; winter nights fall to about 26° in January. A normal year brings about 20 inches of snow; with the rain, that comes to about 45 inches of water.
On November 14 Kennett normally reaches 56° and falls to 38°. The record high is 76°, in 1955; the record low 20°, in 1986. The most rain on this date, 2.42 in, fell in 1972.
Normals 1991–2020 and records since 1894 from the Wilmington Area threaded record (Wilmington Airport, 12 miles south-southeast, 200 ft lower). NOAA, through RCC-ACIS.
