The Exeter 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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70° on Nov. 11, 2022, the hottest reading for this week of the year since 1940. Next is 68° in 2025.
Exeter’s center stands about 880 ft above sea level. Within three miles the land runs from 830 ft to 1,080 ft, a difference of 250 ft: rolling country. The highest named summit within 15 miles is Liberty Pole Hill, about 1,110 ft, 9 miles east-northeast.
Under the town center the state geologic map shows Ancell Group (sandstone), from the Ordovician, 445 to 487 million years old.
The section below crosses 3 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 49×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone. Age: Ordovician, 445 to 487 million years old. About 17 mi of the line.
Dolostone. Age: Ordovician, 445 to 487 million years old. About 4 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 3 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 Exeter reaches the Gulf of America by way of Ross Crossing Creek, the Sugar, the Pecatonica, the Rock River and the Mississippi: about 1,680 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Exeter; river miles along the main stem, rounded.
Exeter has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 11° in January. A normal year brings about 42 inches of snow; with the rain, that comes to about 40 inches of water.
Normals 1991–2020 and records since 1940 at Monroe Wwtp, 14 miles south-southwest, 110 ft higher. NOAA, through RCC-ACIS.
