The Steamboat River 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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68° on Nov. 16, 2016, the hottest reading for this week of the year since 1906. Next is 67° in 1953.
Steamboat River’s center stands about 1,560 ft above sea level. Within three miles the land runs from 1,280 ft to 1,750 ft, a difference of 470 ft: hilly country.
Under the town center the state geologic map shows Volcanogenic graywacke and mudstone (graywacke, mudstone), from the Neoarchean, 2.5 to 2.8 billion 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 38×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Graywacke, mudstone. Age: Neoarchean, 2.5 to 2.8 billion years old. About 12 mi of the line.
Metabasalt, greenstone. Age: Neoarchean, 2.5 to 2.8 billion years old. About 5 mi of the line.
Felsic-volcanic. Age: Neoarchean, 2.5 to 2.8 billion years old. About 4 mi of the line.
Alkalic-volcanic. Age: Neoarchean, 2.5 to 2.8 billion years old. About 2 mi of the line.
Granite, granodiorite. Age: Neoarchean, 2.5 to 2.8 billion 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 Steamboat River reaches the Gulf of America by way of the Kabekona, the Leech Lake and the Mississippi: about 2,240 river miles.
Lakes on the way: Leech 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 Steamboat River; river miles along the main stem, rounded.
Steamboat River has a warm-summer humid continental climate. Summer afternoons average 79° in July; winter nights fall to about −4° in January. A normal year brings about 49 inches of snow; with the rain, that comes to about 26 inches of water.
On November 14 Steamboat River normally reaches 37° and falls to 20°. The record high is 66°, in 2016; the record low −13°, in 1959. The most rain on this date, 1.05 in, fell in 1951.
Normals 1991–2020 and records since 1906 at Cass Lake, 19 miles north-northeast, 260 ft lower. NOAA, through RCC-ACIS.
