The Round Lake 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.
Round Lake’s center stands about 210 ft above sea level. Within three miles the land runs from 150 ft to 390 ft, a difference of 240 ft: rolling country. The highest named summit within 15 miles is Willard Mountain, about 1,400 ft, 15 miles east-northeast.
Under the town center the state geologic map shows Canajoharie Shale (black-shale), from the Middle Ordovician, 459 to 471 million years old.
The section below crosses 3 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.
Black-shale. Age: Middle Ordovician, 459 to 471 million years old. About 22 mi of the line.
Graywacke, sandstone, siltstone. Age: Late Ordovician, 445 to 459 million years old. About 1 mi of the line.
Mudstone. Age: Cambrian to Middle Ordovician, 459 to 542 million years old. About 0.6 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 Round Lake reaches New York Harbor and the Atlantic Ocean by way of Anthony Kill and the Hudson: about 180 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Round Lake; river miles along the main stem, rounded.
Round Lake 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 Round Lake 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, 7 miles north, 120 ft higher. NOAA, through RCC-ACIS.
