The Ava 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 1949. Next is 66° in 1956.
Ava’s center stands about 1,370 ft above sea level. Within three miles the land runs from 1,120 ft to 1,640 ft, a difference of 520 ft: hilly country. The highest named summit within 15 miles is Penn Mountain, about 1,860 ft, 11 miles east-southeast.
Under the town center the state geologic map shows Pulaski and Whetstone Gulf Formations (siltstone, shale), from the Late Ordovician, 445 to 459 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 14×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Siltstone, shale. Age: Late Ordovician, 445 to 459 million years old. About 18 mi of the line.
Black-shale. Age: Middle Ordovician, 459 to 471 million years old. About 5 mi of the line.
Limestone. Age: Middle Ordovician, 459 to 471 million years old. About 1 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 Ava reaches New York Harbor and the Atlantic Ocean by way of Blue Brook, the Mohawk and the Hudson: about 300 river miles.
160 miles of the trip are on the Hudson.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Ava; river miles along the main stem, rounded.
Ava has a warm-summer humid continental climate. Summer afternoons average 75° in July; winter nights fall to about 8° in January. A normal year brings about 164 inches of snow; with the rain, that comes to about 58 inches of water.
On November 14 Ava normally reaches 42° and falls to 26°. The record high is 61°, in 2010; the record low −1°, in 2019. The most rain on this date, 0.95 in, fell in 1961.
Normals 1991–2020 and records since 1949 at Boonville 4 SSW, 6 miles east-northeast, 180 ft higher. NOAA, through RCC-ACIS.
