The Walton Park 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.
Mostly cloudy
Mostly sunny
Mostly sunny
Sunny
Mostly sunny
Mostly sunny
Mostly sunny
Walton Park’s center stands about 830 ft above sea level. Within three miles the land runs from 440 ft to 1,180 ft, a difference of 740 ft: hilly country. The highest named summit within 15 miles is Schunnemunk Mountain, about 1,540 ft, 6 miles northeast.
Under the town center the state geologic map shows Undifferentiated Hamilton Group (shale, siltstone, sandstone), from the Middle Devonian, 384 to 394 million years old.
The section below crosses 9 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 15×. 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, siltstone, sandstone. Age: Middle Devonian, 384 to 394 million years old. About 13 mi of the line.
Gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 3 mi of the line.
Biotite-gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 2 mi of the line.
Dolostone. Age: Early Cambrian, 521 to 542 million years old. About 1 mi of the line.
Granite, gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 1 mi of the line.
Limestone, dolostone. Age: Cambrian to Early Ordovician, 471 to 542 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. 3 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 Walton Park reaches New York Harbor and the Atlantic Ocean by way of Moodna Creek and the Hudson: about 90 river miles.
60 miles of the trip are on the Hudson.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Walton Park; river miles along the main stem, rounded.
