The Zena 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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72° on Nov. 11, 2020, the hottest reading for this week of the year since 1896. Next is 70° in 1909.
Zena’s center stands about 380 ft above sea level. Within three miles the land runs from 300 ft to 1,170 ft, a difference of 870 ft: hilly country. The highest named summit within 15 miles is Hunter Mountain, about 4,040 ft, 14 miles northwest.
Under the town center the state geologic map shows Plattekill and Ashokan Formations (shale, sandstone), from the Middle Devonian, 384 to 394 million 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 5×. 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, sandstone. Age: Middle Devonian, 384 to 394 million years old. About 7 mi of the line.
Shale. Age: Middle Devonian to Late Devonian, 359 to 394 million years old. About 6 mi of the line.
Limestone. Age: Early Devonian to Middle Devonian, 388 to 410 million years old. About 3 mi of the line.
Graywacke, shale. Age: Middle Ordovician, 459 to 471 million years old. About 2 mi of the line.
Sandstone, conglomerate, shale. Age: Late Devonian, 359 to 384 million years old. About 2 mi of the line.
Quartzite, sandstone, conglomerate. Age: Late Ordovician, 445 to 459 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. 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 Zena reaches New York Harbor and the Atlantic Ocean by way of Saw Kill, Esopus Creek and the Hudson: about 120 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Zena; river miles along the main stem, rounded.
Zena has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 19° in January. A normal year brings about 59 inches of snow; with the rain, that comes to about 53 inches of water.
On November 14 Zena normally reaches 49° and falls to 35°. The record high is 67°, in 1909; the record low 12°, in 1905. The most rain on this date, 1.95 in, fell in 1972.
Normals 1991–2020 and records since 1896 at Mohonk Lake, 17 miles south-southwest, 720 ft higher. NOAA, through RCC-ACIS.
