The Huntsville 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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−17° on Nov. 16, 1955, the coldest reading for this week of the year since 1935. Next is 1° in 1978.
Huntsville’s center stands about 4,940 ft above sea level. Within three miles the land runs from 4,890 ft to 6,020 ft, a difference of 1,130 ft: steep hill country. The highest named summit within 15 miles is Ben Lomond, about 9,660 ft, 12 miles northwest.
Under the town center the state geologic map shows Lake Bonneville deposits (clay), from the Pleistocene, less than 2.6 million years old.
The section below crosses 9 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 4×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Conglomerate, mixed-clastic. Age: Late Cretaceous to Early Eocene, 48 to 100 million years old. About 6 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 3 mi of the line.
Andesite. Age: Late Eocene to Oligocene, 23 to 38 million years old. About 3 mi of the line.
Mixed-clastic. Age: Mesoproterozoic to Neoproterozoic, 542 to 1,600 million years old. About 3 mi of the line.
Metamorphic. Age: Neoarchean to Paleoproterozoic, 1.6 to 2.8 billion years old. About 3 mi of the line.
Clay. Age: Pleistocene, less than 2.6 million years old. About 3 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 3 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 Huntsville reaches Great Salt Lake by way of Pineview Reservoir, the Ogden and the Weber: about 35 river miles. Great Salt Lake has no outlet to the sea: the water leaves only by evaporating or soaking into the ground.
Lake on the way: Pineview Reservoir.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Huntsville; river miles along the main stem, rounded.
Huntsville has a dry-summer warm-summer continental climate. Summer afternoons average 87° in July; winter nights fall to about 9° in January. A normal year brings about 108 inches of snow; with the rain, that comes to about 31 inches of water.
On November 14 Huntsville normally reaches 46° and falls to 23°. The record high is 66°, in 1967; the record low 8°, in 1978. The most rain on this date, 2.17 in, fell in 1955.
Normals 1991–2020 and records since 1935 at Pineview Dam, 3 miles west. NOAA, through RCC-ACIS.
