The Prattsburgh 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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Prattsburgh’s center stands about 1,470 ft above sea level. Within three miles the land runs from 1,290 ft to 2,180 ft, a difference of 890 ft: hilly country. The highest named summit within 15 miles is Gannett Hill, about 2,320 ft, 14 miles north-northwest.
Under the town center the state geologic map shows Beers Hill, Dunn Hill, Millport, and Moreland Shales; Grimes Siltstone, from the Late Devonian, 359 to 384 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 13×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale. Age: Late Devonian, 359 to 384 million years old. About 13 mi of the line.
Shale, siltstone. Age: Late Devonian, 359 to 384 million years old. About 10 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 Prattsburgh reaches Chesapeake Bay and the Atlantic Ocean by way of Twelvemile Creek, the Cohocton, the Chemung and the Susquehanna: about 380 river miles.
Lake on the way: Lake Aldred.
250 miles of the trip are on the Susquehanna.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Prattsburgh; river miles along the main stem, rounded.
