The Osceola 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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Osceola’s center stands about 1,140 ft above sea level. Within three miles the land runs from 1,000 ft to 1,150 ft, a difference of 150 ft: gently rolling country.
Under the town center the state geologic map shows Bronson Group (limestone, shale), from the Middle Pennsylvanian to Late Pennsylvanian, 299 to 315 million 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 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.
Limestone, shale. Age: Middle Pennsylvanian to Late Pennsylvanian, 299 to 315 million years old. About 9 mi of the line.
Shale, limestone. Age: Middle Pennsylvanian, 307 to 315 million years old. About 8 mi of the line.
Limestone, shale. Age: Late Pennsylvanian, 299 to 307 million years old. About 5 mi of the line.
Shale, siltstone. Age: Middle Pennsylvanian, 307 to 315 million 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 Osceola reaches the Gulf of America by way of South Squaw Creek, Squaw Creek, the South River, the Des Moines and the Mississippi: about 1,560 river miles.
Lake on the way: Roberts Creek.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Osceola; river miles along the main stem, rounded.
