The Hawley 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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Hawley’s center stands about 1,760 ft above sea level. Within three miles the land runs from 930 ft to 1,910 ft, a difference of 980 ft: steep hill country. The highest named summit within 15 miles is Crum Hill, about 2,830 ft, 12 miles northwest.
Under the town center the state geologic map shows Goshen Formation (schist), from the Early Devonian, 394 to 422 million years old.
The section below crosses 14 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 11×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Schist. Age: Early Devonian, 394 to 422 million years old. About 8 mi of the line.
Schist. Age: Early Devonian, 394 to 422 million years old. About 3 mi of the line.
Gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 3 mi of the line.
Granofels, schist. Age: Early Ordovician to Middle Ordovician, 471 to 487 million years old. About 2 mi of the line.
Amphibolite, greenstone, schist. Age: Silurian, 430 to 436 million years old. About 2 mi of the line.
Phyllite, schist. Age: Early Devonian, 394 to 422 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. 8 smaller units along the line are not listed.
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 Hawley reaches Long Island Sound and the Atlantic Ocean by way of Mill Brook, the Chickley, the Deerfield and the Connecticut: about 150 river miles.
120 miles of the trip are on the Connecticut.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Hawley; river miles along the main stem, rounded.
