The Boulder Junction 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. 14, 1953, the hottest reading for this week of the year since 1903. Next is 67° in 1944.
Boulder Junction’s center stands about 1,660 ft above sea level. Within three miles the land runs from 1,600 ft to 1,740 ft, a difference of 140 ft: gently rolling country.
Under the town center the state geologic map shows Baraga Group; Michigamme Formation, undivided (metagraywacke), from the Paleoproterozoic, 1.6 to 2.5 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 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.
Metagraywacke. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 15 mi of the line.
Basalt, basaltic-andesite. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 4 mi of the line.
Granite, tonalite, gneiss. Age: Paleoproterozoic, 1.8 to 1.9 billion years old. About 2 mi of the line.
Basalt. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 2 mi of the line.
Mixed-clastic, metagraywacke. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 2 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 Boulder Junction reaches the Gulf of America by way of the Manitowish, the Flambeau, the Chippewa and the Mississippi: about 2,020 river miles.
Lakes on the way: Lipp Lake, Lake Wissota and Holcombe Flowage.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Boulder Junction; river miles along the main stem, rounded.
Boulder Junction has a warm-summer humid continental climate. Summer afternoons average 77° in July; winter nights fall to about 1° in January. A normal year brings about 99 inches of snow; with the rain, that comes to about 34 inches of water.
On November 14 Boulder Junction normally reaches 37° and falls to 23°. The record high is 68°, in 1953; the record low −8°, in 1986. The most rain on this date, 0.59 in, fell in 2010.
Normals 1991–2020 and records since 1903 at Minocqua, 16 miles south-southwest. NOAA, through RCC-ACIS.
