The Chatfield 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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71° on Nov. 16, 1953, the hottest reading for this week of the year since 1886. Next is 71° in 1999.
Chatfield’s center stands about 1,040 ft above sea level. Within three miles the land runs from 940 ft to 1,280 ft, a difference of 340 ft: rolling country. The highest named summit within 15 miles is Chance Hollow Hill, about 1,320 ft, 7 miles northwest.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 40×. 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, sandstone. Age: Early Ordovician, 471 to 487 million years old. About 13 mi of the line.
Limestone, dolostone. Age: Late Ordovician, 445 to 459 million years old. About 8 mi of the line.
Shale, limestone, sandstone. Age: Middle Ordovician to Late Ordovician, 445 to 471 million years old. About 3 mi of the line.
Sandstone, siltstone, shale. Age: Cambrian, 487 to 497 million years old. About 0.4 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 Chatfield reaches the Gulf of America by way of the North Branch Root, the Root and the Mississippi: about 1,760 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Chatfield; river miles along the main stem, rounded.
Chatfield has a warm-summer humid continental climate. Summer afternoons average 80° in July; winter nights fall to about 7° in January. A normal year brings about 53 inches of snow; with the rain, that comes to about 35 inches of water.
On November 14 Chatfield normally reaches 42° and falls to 26°. The record high is 69°, in 2025; the record low −5°, in 1916. The most rain on this date, 0.88 in, fell in 1973.
Normals 1991–2020 and records since 1886 from the Rochester Area threaded record (Rochester International Airport, 16 miles west-northwest, 270 ft higher). NOAA, through RCC-ACIS.
