The Williamstown 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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3.22 inches of rain fell in two days, the most for this week of the year since records began in 1893. The next wettest, 2.58 inches, fell in 2009.
Williamstown’s center stands about 720 ft above sea level. Within three miles the land runs from 590 ft to 730 ft, a difference of 140 ft: gently rolling country.
Under the town center the state geologic map shows Meramecian Series (limestone), from the Carboniferous, 324 to 359 million years old.
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.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 24 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 Williamstown reaches the Gulf of America by way of the North Fabius, the Fabius and the Mississippi: about 1,350 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Williamstown; river miles along the main stem, rounded.
Williamstown has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 17° in January. About 39 inches of rain fall in a normal year.
On November 14 Williamstown normally reaches 52° and falls to 33°. The record high is 81°, in 1989; the record low 6°, in 1940. The most rain on this date, 0.65 in, fell in 1985.
Normals 1991–2020 and records since 1893 at Canton L And D 20, 16 miles east-southeast, 230 ft lower. NOAA, through RCC-ACIS.
