The Arundel 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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74° on Nov. 13, 2022, the hottest reading for this week of the year since 1989. Next is 67° in 1989.
Arundel’s center stands about 130 ft above sea level. Within three miles the land runs from 70 ft to 240 ft, a difference of 170 ft: gently rolling country. The highest named summit within 15 miles is Ossipee Hill, about 1,060 ft, 15 miles northwest.
Under the town center the state geologic map shows Silurian - Precambrian Z Berwick Formation (gneiss), from the Neoproterozoic to Silurian, 422 to 1,000 million years old.
The section below crosses 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 43×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Granite. Age: Carboniferous, 299 to 359 million years old. About 7 mi of the line.
Gneiss. Age: Neoproterozoic to Silurian, 422 to 1,000 million years old. About 5 mi of the line.
Granite. Age: Carboniferous, 299 to 359 million years old. About 5 mi of the line.
Mudstone, limestone. Age: Silurian to Devonian, 359 to 445 million years old. About 2 mi of the line.
Sandstone. Age: Late Ordovician to Silurian, 428 to 459 million years old. About 0.7 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 Arundel reaches the Atlantic Ocean by way of the Kennebunk: about 10 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Arundel; river miles along the main stem, rounded.
Arundel has a warm-summer humid continental climate. Summer afternoons average 77° in July; winter nights fall to about 13° in January. A normal year brings about 49 inches of snow; with the rain, that comes to about 52 inches of water.
On November 14 Arundel normally reaches 49° and falls to 30°. The record high is 62°, in 2010; the record low 10°, in 2019. The most rain on this date, 1.11 in, fell in 2006.
Normals 1991–2020 and records since 1989 at Kennebunkport, 6 miles south-southeast, 110 ft lower. NOAA, through RCC-ACIS.
