The Broadalbin 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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73° on Nov. 14, 1989, the hottest reading for this week of the year since 1955. Next is 72° in 2020.
Broadalbin’s center stands about 820 ft above sea level. Within three miles the land runs from 760 ft to 1,010 ft, a difference of 250 ft: rolling country. The highest named summit within 15 miles is Pinnacle, about 2,490 ft, 15 miles northwest.
Under the town center the state geologic map shows Beekmantown Group (dolostone, limestone), from the Early Ordovician, 471 to 487 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 10×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Dolostone, limestone. Age: Early Ordovician, 471 to 487 million years old. About 12 mi of the line.
Gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 4 mi of the line.
Gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 2 mi of the line.
Dolostone. Age: Cambrian to Early Ordovician, 471 to 497 million years old. About 0.9 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 0.6 mi of the line.
Dolostone. Age: Cambrian, 487 to 542 million years old. About 0.3 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 Broadalbin reaches New York Harbor and the Atlantic Ocean by way of Kennyetto Creek, the Sacandaga and the Hudson: about 270 river miles.
Lake on the way: Great Sacandaga Lake.
230 miles of the trip are on the Hudson.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Broadalbin; river miles along the main stem, rounded.
Broadalbin has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 14° in January. A normal year brings about 64 inches of snow; with the rain, that comes to about 46 inches of water.
On November 14 Broadalbin normally reaches 49° and falls to 31°. The record high is 73°, in 1989; the record low 11°, in 1996. The most rain on this date, 1.04 in, fell in 1997.
Normals 1991–2020 and records since 1955 at Saratoga Springs 4 SW, 19 miles east, 490 ft lower. NOAA, through RCC-ACIS.
