The Boothwyn 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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79° on Nov. 15, 1993, the hottest reading for this week of the year since 1931. Next is 75° in 1973.
Boothwyn’s center stands about 100 ft above sea level. Within three miles the land runs from 10 ft to 400 ft, a difference of 390 ft: rolling country. Open water lies within three miles. The highest named summit within 15 miles is Hunting Hill, about 510 ft, 9 miles north.
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 51×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mica-schist. Age: Paleozoic, 252 to 542 million years old. About 8 mi of the line.
Granite. Age: Paleozoic, 252 to 542 million years old. About 3 mi of the line.
Age: Paleozoic, 252 to 542 million years old. About 2 mi of the line.
Gneiss. Age: Paleozoic, 252 to 542 million years old. About 2 mi of the line.
Sand, gravel. Age: Miocene, 5.3 to 23 million years old. About 1 mi of the line.
Gneiss. Age: Paleozoic, 252 to 542 million years old. About 0.5 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 Boothwyn reaches Delaware Bay and the Atlantic Ocean by way of East Branch Naaman Creek, Naaman Creek and the Delaware: about 50 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Boothwyn; river miles along the main stem, rounded.
Boothwyn has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 24° in January. A normal year brings about 12 inches of snow; with the rain, that comes to about 50 inches of water.
On November 14 Boothwyn normally reaches 53° and falls to 37°. The record high is 73°, in 1993; the record low 21°, in 1986. The most rain on this date, 2.17 in, fell in 1972.
Normals 1991–2020 and records since 1931 at Wilmington Porter Res, 7 miles southwest, 170 ft higher. NOAA, through RCC-ACIS.
