The Millstone 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. 16, 1993, the hottest reading for this week of the year since 1891. Next is 77° in 2020.
Millstone’s center stands about 220 ft above sea level. Within three miles the land runs from 130 ft to 350 ft, a difference of 220 ft: rolling country.
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 63×. 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. Age: Late Cretaceous, 66 to 72 million years old. About 8 mi of the line.
Sand, clay. Age: Late Cretaceous, 66 to 72 million years old. About 5 mi of the line.
Sand, clay. Age: Late Cretaceous, 72 to 84 million years old. About 4 mi of the line.
Sand. Age: Late Cretaceous, 72 to 84 million years old. About 3 mi of the line.
Sand. Age: Late Cretaceous, 72 to 84 million years old. About 2 mi of the line.
Sand. Age: Early Paleocene, 62 to 66 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 Millstone reaches New York Harbor and the Atlantic Ocean by way of Rocky Brook, the Millstone and the Raritan: about 55 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Millstone; river miles along the main stem, rounded.
Millstone has a hot-summer humid continental climate. Summer afternoons average 87° in July; winter nights fall to about 21° in January. A normal year brings about 24 inches of snow; with the rain, that comes to about 48 inches of water.
On November 14 Millstone normally reaches 56° and falls to 33°. The record high is 72°, in 1959; the record low 15°, in 2019. The most rain on this date, 1.89 in, fell in 1972.
Normals 1991–2020 and records since 1891 at Hightstown 2 W, 8 miles west-northwest, 120 ft lower. NOAA, through RCC-ACIS.
