The Pound Ridge 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.
Partly cloudy
Mostly sunny; warmer
Partly cloudy
Sunny
Sunny
Mostly sunny
Mostly sunny
17° on Nov. 15, 1996, the coldest reading for this week of the year since 1946. Next is 18° in 1967.
Pound Ridge’s center stands about 630 ft above sea level. Within three miles the land runs from 360 ft to 820 ft, a difference of 460 ft: hilly country. The highest named summit within 15 miles is Round Mountain, about 1,030 ft, 15 miles north.
Under the town center the state geologic map shows Fordham Gneiss, undivided, from the Precambrian to Mesoproterozoic.
The section below crosses 10 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 23×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gneiss. Age: Middle Ordovician, 459 to 471 million years old. About 6 mi of the line.
Gneiss. Age: Precambrian to Mesoproterozoic. About 6 mi of the line.
Pelitic-schist, gneiss, amphibolite. Age: Early Cambrian to Middle Ordovician, 459 to 542 million years old. About 2 mi of the line.
Gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 2 mi of the line.
Gneiss. Age: Precambrian to Mesoproterozoic. About 2 mi of the line.
Biotite-gneiss, amphibolite. Age: Ordovician, 445 to 487 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. 4 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 Pound Ridge reaches New York Harbor and the Atlantic Ocean by way of the Stone Hill, the Croton and the Hudson: about 60 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Pound Ridge; river miles along the main stem, rounded.
Pound Ridge has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 23° in January. About 48 inches of rain fall in a normal year.
On November 14 Pound Ridge normally reaches 53° and falls to 37°. The record high is 71°, in 1993; the record low 20°, in 1986. The most rain on this date, 1.92 in, fell in 1972.
Normals 1991–2020 and records since 1946 at Westchester Co Airport, 12 miles south-southwest, 260 ft lower. NOAA, through RCC-ACIS.
