The Advance 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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Advance’s center stands about 360 ft above sea level. Within three miles the land runs from 340 ft to 480 ft, a difference of 140 ft: gently rolling country. The highest named summit within 15 miles is Null Hill, about 600 ft, 7 miles north-northwest.
Under the town center the state geologic map shows Holocene series (clay, silt, sand), from the Holocene, less than 12,000 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 46×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Clay, silt, sand. Age: Holocene, less than 12,000 years old. About 12 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 9 mi of the line.
Clay, sand. Age: Late Cretaceous, 66 to 100 million years old. About 3 mi of the line.
Sand, clay, gravel. Age: Paleocene to Pliocene, 2.6 to 66 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 Advance reaches the Gulf of America by way of the Little River, the Right Hand Chute Little, Iron Mines Creek, the Saint Francis and the Mississippi: about 970 river miles.
690 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Advance; river miles along the main stem, rounded.
