The West Marlborough 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.
Partly cloudy
Partly cloudy; warmer
Partly cloudy
Sunny
Partly cloudy
Mostly sunny
Mostly sunny
74° on Nov. 11, 2024, the hottest reading for this week of the year since 1978. Next is 72° in 1993.
West Marlborough’s center stands about 530 ft above sea level. Within three miles the land runs from 290 ft to 610 ft, a difference of 320 ft: rolling country. The highest named summit within 15 miles is Gap Hill, about 880 ft, 12 miles west-northwest.
Under the town center the state geologic map shows Felsic and intermediate gneiss, from the Precambrian.
The section below crosses 12 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 24×. 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 6 mi of the line.
Gneiss. Age: Precambrian. About 4 mi of the line.
Schist, gneiss. Age: Paleozoic, 252 to 542 million years old. About 3 mi of the line.
Gneiss. Age: Precambrian. About 2 mi of the line.
Quartzite. Age: Paleozoic, 252 to 542 million years old. About 2 mi of the line.
Marble. Age: Paleozoic, 252 to 542 million years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 6 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 West Marlborough reaches Delaware Bay and the Atlantic Ocean by way of East Branch White Clay Creek, White Clay Creek, the Christina and the Delaware: about 75 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of West Marlborough; river miles along the main stem, rounded.
West Marlborough has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 22° in January. A normal year brings about 18 inches of snow; with the rain, that comes to about 48 inches of water.
On November 14 West Marlborough normally reaches 54° and falls to 33°. The record high is 72°, in 1993; the record low 15°, in 2022. The most rain on this date, 0.92 in, fell in 1995.
Normals 1991–2020 and records since 1978 at Octoraro Lake, 14 miles west-southwest, 270 ft lower. NOAA, through RCC-ACIS.
