The Republic 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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66° on Nov. 13, 1999, the hottest reading for this week of the year since 1961. Next is 65° in 2001.
Republic’s center stands about 1,510 ft above sea level. Within three miles the land runs from 1,480 ft to 1,640 ft, a difference of 160 ft: gently rolling country. The highest named summit within 15 miles is Green Hills, about 1,750 ft, 14 miles east-southeast.
Under the town center the state geologic map shows Menominee Group, undivided (quartzite, slate, banded-iron-formation), from the Paleoproterozoic, 1.6 to 2.5 billion years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 45×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gneiss, amphibolite, migmatite. Age: Paleoarchean to Neoarchean, 2.5 to 3.6 billion years old. About 16 mi of the line.
Metasedimentary, metavolcanic. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 4 mi of the line.
Quartzite, slate, banded-iron-formation. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 3 mi of the line.
Mafic-volcanic. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 0.7 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 Republic reaches Lake Michigan by way of the Mitchigan, the Fence, the Michigamme and the Menominee: about 160 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
Lake on the way: Michigamme Reservoir.
120 miles of the trip are on the Menominee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Republic; river miles along the main stem, rounded.
Republic has a warm-summer humid continental climate. Summer afternoons average 76° in July; winter nights fall to about 7° in January. A normal year brings about 197 inches of snow; with the rain, that comes to about 37 inches of water.
On November 14 Republic normally reaches 38° and falls to 25°. The record high is 59°, in 2001; the record low 5°, in 1995. The most rain on this date, 0.51 in, fell in 2020.
Normals 1991–2020 and records since 1961 from the Marquette County Area threaded record (Marquette Wfo, 22 miles east-northeast). NOAA, through RCC-ACIS.
