The Walloon Lake 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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75° on Nov. 11, 2022, the hottest reading for this week of the year since 1961. Next is 69° in 2012.
Walloon Lake’s center stands about 720 ft above sea level. Within three miles the land runs from 680 ft to 1,000 ft, a difference of 320 ft: rolling country. The highest named summit within 15 miles is Watson Hills, about 1,500 ft, 14 miles southeast.
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 24×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Black-shale. Age: Late Devonian, 359 to 384 million years old. About 12 mi of the line.
Limestone. Age: Middle Devonian, 384 to 394 million years old. About 9 mi of the line.
Shale. Age: Late Devonian, 359 to 384 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.
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 Walloon Lake reaches Lake Michigan by way of Walloon Lake and the Bear River: about 16 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
Lake on the way: Walloon Lake.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Walloon Lake; river miles along the main stem, rounded.
Walloon Lake has a warm-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 13° in February. A normal year brings about 112 inches of snow; with the rain, that comes to about 36 inches of water.
On November 14 Walloon Lake normally reaches 45° and falls to 31°. The record high is 65°, in 1994; the record low 14°, in 1986. The most rain on this date, 0.63 in, fell in 1974.
Normals 1991–2020 and records since 1961 at Boyne Falls, 7 miles south. NOAA, through RCC-ACIS.
