The Turtle 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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Mostly sunny; warmer
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Chance of showers
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Showers likely
−10° on Nov. 17, 1989, the coldest reading for this week of the year since 1931. Next is −9° in 1986.
Turtle Lake’s center stands about 1,230 ft above sea level. Within three miles the land runs from 1,160 ft to 1,300 ft, a difference of 140 ft: gently rolling country.
Under the town center the state geologic map shows Cambrian, undivided (sandstone), from the Cambrian, 487 to 542 million years old.
The section below crosses 2 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.
Sandstone. Age: Cambrian, 487 to 542 million years old. About 21 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 Turtle Lake reaches the Gulf of America by way of South Branch Beaver Brook, Beaver Brook, the Apple, the Saint Croix and the Mississippi: about 1,880 river miles.
Lakes on the way: Lake Pepin and Lake Mallalieu 175.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Turtle Lake; river miles along the main stem, rounded.
Turtle Lake has a warm-summer humid continental climate. Summer afternoons average 79° in July; winter nights fall to about 0° in January. A normal year brings about 56 inches of snow; with the rain, that comes to about 34 inches of water.
On November 14 Turtle Lake normally reaches 39° and falls to 23°. The record high is 67°, in 1999; the record low −2°, in 1940. The most rain on this date, 0.57 in, fell in 1951.
Normals 1991–2020 and records since 1931 at Cumberland, 12 miles north-northeast. NOAA, through RCC-ACIS.
