The Crystal Lakes 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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5° on Nov. 13, 2019, the coldest reading for this week of the year since 1893. Next is 9° in 1959.
Crystal Lakes’s center stands about 850 ft above sea level. Within three miles the land runs from 810 ft to 970 ft, a difference of 160 ft: gently rolling country.
Under the town center the state geologic map shows Cincinnati Group as used by Wickstrom (1990) (shale, dolostone, limestone), from the Ordovician, 445 to 487 million years old.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 47×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale, dolostone, limestone. Age: Ordovician, 445 to 487 million years old. About 12 mi of the line.
Dolostone. Age: Silurian, 422 to 434 million years old. About 4 mi of the line.
Shale, limestone. Age: Late Ordovician, 445 to 459 million years old. About 4 mi of the line.
Dolostone, limestone, shale. Age: Silurian, 422 to 445 million years old. About 2 mi of the line.
Dolostone. Age: Silurian, 422 to 445 million years old. About 1 mi of the line.
Shale, limestone. Age: Late Ordovician, 445 to 454 million years old. About 0.8 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit 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 Crystal Lakes reaches the Gulf of America by way of the Mad, the Great Miami, the Ohio and the Mississippi: about 1,550 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Crystal Lakes; river miles along the main stem, rounded.
Crystal Lakes has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 22° in January. A normal year brings about 25 inches of snow; with the rain, that comes to about 41 inches of water.
On November 14 Crystal Lakes normally reaches 53° and falls to 36°. The record high is 76°, in 1909; the record low 11°, in 1986. The most rain on this date, 1.44 in, fell in 1993.
Normals 1991–2020 and records since 1893 from the Dayton Area threaded record (Dayton International Airport, 10 miles west, 140 ft higher). NOAA, through RCC-ACIS.
