The Long 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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70° on Nov. 11, 2020, the hottest reading for this week of the year since 1940. Next is 69° in 2012.
Long Lake’s center stands about 1,660 ft above sea level. Within three miles the land runs from 1,620 ft to 2,990 ft, a difference of 1,370 ft: steep hill country. The highest named summit within 15 miles is Blue Mountain, about 3,760 ft, 7 miles south.
Under the town center the state geologic map shows Charnockite, granitic and quartz syenite gneiss (charnockite, gneiss), from the Mesoproterozoic, 1 to 1.6 billion years old.
The section below crosses 8 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.
Charnockite, gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 11 mi of the line.
Metasedimentary, gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 8 mi of the line.
Gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 1 mi of the line.
Metasedimentary, migmatite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 0.9 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 0.9 mi of the line.
Gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 0.7 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 2 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 Long Lake reaches the St. Lawrence River by way of the Raquette and the Saint Lawrence: about 140 river miles. The St. Lawrence carries it on to the Atlantic.
Lakes on the way: Long Lake and Stark Falls Reservoir.
65 miles of the trip are on the Raquette.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Long Lake; river miles along the main stem, rounded.
Long Lake has a warm-summer humid continental climate. Summer afternoons average 77° in July; winter nights fall to about 4° in January. A normal year brings about 105 inches of snow; with the rain, that comes to about 46 inches of water.
On November 14 Long Lake normally reaches 42° and falls to 24°. The record high is 65°, in 1989; the record low −2°, in 1986. The most rain on this date, 0.85 in, fell in 1959.
Normals 1991–2020 and records since 1940 from the Newcomb Area threaded record (Newcomb, 10 miles east). NOAA, through RCC-ACIS.
