The Grant 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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Grant’s center stands about 1,040 ft above sea level. Within three miles the land runs from 590 ft to 1,170 ft, a difference of 580 ft: hilly country. The highest named summit within 15 miles is Mount Horace Greeley, about 1,530 ft, 13 miles west.
Under the town center the state geologic map shows Portage Lake Volcanics (basalt), from the Mesoproterozoic, 1.1 to 1.1 billion years old.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 27×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Basalt. Age: Mesoproterozoic, 1.1 to 1.1 billion years old. About 18 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.
Rain that falls on Grant runs straight into Lake Superior. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Grant; river miles along the main stem, rounded.
