The Lake Holiday 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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1° on Nov. 12, 2019, the coldest reading for this week of the year since 1912. Next is 3° in 1986.
Lake Holiday’s center stands about 670 ft above sea level. Within three miles the land runs from 600 ft to 690 ft, a difference of 90 ft: gently rolling country.
Under the town center the state geologic map shows Ancell Group (sandstone, limestone, dolostone), from the Middle Ordovician to Late Ordovician, 454 to 468 million years old.
The section below crosses 5 rock units mapped at the surface.
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.
Dolostone. Age: Early Ordovician to Middle Ordovician, 459 to 487 million years old. About 11 mi of the line.
Sandstone, limestone, dolostone. Age: Middle Ordovician to Late Ordovician, 454 to 468 million years old. About 5 mi of the line.
Shale, limestone. Age: Late Ordovician, 445 to 454 million years old. About 4 mi of the line.
Dolostone, sandstone. Age: Middle Cambrian to Cambrian, 487 to 521 million years old. About 3 mi of the line.
Dolostone, limestone. Age: Late Ordovician, 447 to 459 million years old. About 2 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 Lake Holiday reaches the Gulf of America by way of Somonauk Creek, the Fox River, the Illinois and the Mississippi: about 1,460 river miles.
Lake on the way: Peoria Lake.
1,190 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Lake Holiday; river miles along the main stem, rounded.
Lake Holiday has a hot-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 12° in January. A normal year brings about 30 inches of snow; with the rain, that comes to about 37 inches of water.
On November 14 Lake Holiday normally reaches 47° and falls to 29°. The record high is 73°, in 1989; the record low 3°, in 1986. The most rain on this date, 2.42 in, fell in 1926.
Normals 1991–2020 and records since 1912 at Paw Paw 2 S, 16 miles west-northwest, 220 ft higher. NOAA, through RCC-ACIS.
