The Chickamaw Beach 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.
Partly cloudy
Mostly sunny; warmer
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Chance of showers
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Showers likely
68° on Nov. 17, 1913, the hottest reading for this week of the year since 1887. Next is 68° in 1953.
Chickamaw Beach’s center stands about 1,310 ft above sea level. Within three miles the land runs from 1,280 ft to 1,410 ft, a difference of 130 ft: gently rolling country. The highest named summit within 15 miles is Maple Hill, about 1,590 ft, 8 miles southwest.
Under the town center the state geologic map shows Foliated to gneissic tonalite, granodiorite, and diorite (tonalite, granodiorite, diorite), from the Neoarchean, 2.5 to 2.8 billion 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 57×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Schist. Age: Neoarchean, 2.5 to 2.8 billion years old. About 8 mi of the line.
Slate, graywacke. Age: Paleoproterozoic, 1.6 to 2 billion years old. About 8 mi of the line.
Granite, granodiorite. Age: Neoarchean, 2.5 to 2.8 billion years old. About 3 mi of the line.
Tonalite, granodiorite, diorite. Age: Neoarchean, 2.5 to 2.8 billion years old. About 3 mi of the line.
Metabasalt, greenstone. Age: Neoarchean, 2.5 to 2.8 billion years old. About 0.9 mi of the line.
Gabbro, pyroxenite, diorite. Age: Paleoproterozoic, 1.6 to 1.8 billion 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. 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 Chickamaw Beach reaches the Gulf of America by way of the Pine River and the Mississippi: about 2,040 river miles.
Lakes on the way: Pine River Reservoir and Lake Pepin.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Chickamaw Beach; river miles along the main stem, rounded.
Chickamaw Beach has a warm-summer humid continental climate. Summer afternoons average 80° in July; winter nights fall to about −1° in January. A normal year brings about 39 inches of snow; with the rain, that comes to about 29 inches of water.
On November 14 Chickamaw Beach normally reaches 39° and falls to 23°. The record high is 63°, in 2016; the record low −4°, in 1959. The most rain on this date, 1.00 in, fell in 1926.
Normals 1991–2020 and records since 1887 at Pine River Dam, 14 miles east-southeast. NOAA, through RCC-ACIS.
