The Springbrook 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. 14, 1999, the hottest reading for this week of the year since 1937. Next is 73° in 2022.
Springbrook’s center stands about 830 ft above sea level. Within three miles the land runs from 650 ft to 920 ft, a difference of 270 ft: rolling country. The highest named summit within 15 miles is Pilot Knob, about 980 ft, 15 miles north-northeast.
Under the town center the state geologic map shows Hopkinton, Blanding, Tete Des Morts, Mosalem formations (dolostone), from the Late Ordovician to Silurian, 434 to 447 million years old.
The section below crosses 8 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.
Dolostone. Age: Late Ordovician to Silurian, 434 to 447 million years old. About 13 mi of the line.
Dolostone. Age: Silurian, 431 to 440 million years old. About 4 mi of the line.
Dolostone, limestone. Age: Late Ordovician, 447 to 459 million years old. About 3 mi of the line.
Shale, dolostone. Age: Late Ordovician, 447 to 454 million years old. About 1 mi of the line.
Dolostone, limestone. Age: Silurian, 422 to 445 million years old. About 1 mi of the line.
Dolostone, limestone. Age: Late Ordovician, 447 to 459 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. 2 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 Springbrook reaches the Gulf of America by way of Pleasant Creek and the Mississippi: about 1,540 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Springbrook; river miles along the main stem, rounded.
Springbrook has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 12° in January. A normal year brings about 32 inches of snow; with the rain, that comes to about 38 inches of water.
On November 14 Springbrook normally reaches 48° and falls to 30°. The record high is 74°, in 1999; the record low 3°, in 1986. The most rain on this date, 1.11 in, fell in 2001.
Normals 1991–2020 and records since 1937 at Bellevue L/D 12, 7 miles north-northeast, 230 ft lower. NOAA, through RCC-ACIS.
