The Andes 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. 11, 2020, the hottest reading for this week of the year since 1924. Next is 70° in 1956.
Andes’s center stands about 1,620 ft above sea level. Within three miles the land runs from 1,470 ft to 2,780 ft, a difference of 1,310 ft: steep hill country. The highest named summit within 15 miles is Balsam Lake Mountain, about 3,730 ft, 14 miles southeast.
Under the town center the state geologic map shows Lower Walton Formation (sandstone, conglomerate, shale), from the Late Devonian, 359 to 384 million years old.
The section below crosses 2 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.
Shale, sandstone, conglomerate. Age: Late Devonian, 359 to 384 million years old. About 17 mi of the line.
Sandstone, conglomerate, shale. Age: Late Devonian, 359 to 384 million years old. About 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.
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 Andes reaches Delaware Bay and the Atlantic Ocean by way of Pepacton Reservoir, the East Branch Delaware and the Delaware: about 350 river miles.
Lake on the way: Pepacton Reservoir.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Andes; river miles along the main stem, rounded.
Andes has a warm-summer humid continental climate. Summer afternoons average 80° in July; winter nights fall to about 12° in January. A normal year brings about 71 inches of snow; with the rain, that comes to about 49 inches of water.
On November 14 Andes normally reaches 48° and falls to 28°. The record high is 68°, in 2022; the record low 9°, in 1986. The most rain on this date, 0.93 in, fell in 2007.
Normals 1991–2020 and records since 1924 at Delhi 2 SE, 8 miles northwest, 160 ft lower. NOAA, through RCC-ACIS.
