The Delco 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.
Sunny
Sunny; warmer
Sunny
Sunny
Sunny
Mostly sunny
Mostly sunny
4.84 inches of rain fell in two days, the most for this week of the year since records began in 1870. The next wettest, 4.73 inches, fell in 1937.
Delco’s center stands about 50 ft above sea level. Within three miles the land runs from 20 ft to 100 ft, a difference of 80 ft: gently rolling country.
Under the town center the state geologic map shows Peedee Formation (sand, clay), from the Cretaceous, 66 to 145 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 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.
Sand, clay. Age: Cretaceous, 66 to 145 million years old. About 17 mi of the line.
Sand. Age: Tertiary, 2.6 to 66 million years old. About 7 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 Delco reaches the Atlantic Ocean by way of Livingston Creek and the Cape Fear: about 55 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Delco; river miles along the main stem, rounded.
Delco has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 36° in January. About 60 inches of rain fall in a normal year.
On November 14 Delco normally reaches 68° and falls to 45°. The record high is 82°, in 1993; the record low 26°, in 2013. The most rain on this date, 1.95 in, fell in 1908.
Normals 1991–2020 and records since 1870 from the Wilmington Area threaded record (Wilmington Int'L Airport, 19 miles east). NOAA, through RCC-ACIS.
