The Big Stone City 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.
Mostly sunny
Mostly sunny; warmer
Mostly sunny
Partly cloudy
Partly cloudy
Partly cloudy; cooler
Showers likely
70° on Nov. 13, 1999, the hottest reading for this week of the year since 1917. Next is 69° in 1953.
Big Stone City’s center stands about 1,040 ft above sea level. Within three miles the land runs from 950 ft to 1,120 ft, a difference of 170 ft: gently rolling country.
Under the town center the state geologic map shows Greenhorn Formation (shale, mudstone, marlstone), from the Late Cretaceous, 66 to 100 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.
Conglomerate, sandstone, mudstone. Age: Late Cretaceous, 72 to 100 million years old. About 10 mi of the line.
Shale. Age: Late Cretaceous, 66 to 100 million years old. About 8 mi of the line.
Granite. Age: Neoarchean, 2.5 to 2.8 billion years old. About 3 mi of the line.
Shale. Age: Late Cretaceous, 66 to 100 million years old. About 1 mi of the line.
Shale, mudstone, marlstone. Age: Late Cretaceous, 66 to 100 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 Big Stone City reaches the Gulf of America by way of Big Stone Lake, the Minnesota and the Mississippi: about 2,150 river miles.
Lakes on the way: Big Stone Lake and Lake Pepin.
1,750 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Big Stone City; river miles along the main stem, rounded.
Big Stone City has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 3° in January. A normal year brings about 43 inches of snow; with the rain, that comes to about 26 inches of water.
On November 14 Big Stone City normally reaches 42° and falls to 24°. The record high is 68°, in 2025; the record low −9°, in 1940. The most rain on this date, 0.27 in, fell in 1926.
Normals 1991–2020 and records since 1917 at Artichoke Lake 1 E, 18 miles east-northeast. NOAA, through RCC-ACIS.
