The Peoa 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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71° on Nov. 15, 1999, the hottest reading for this week of the year since 1955. Next is 69° in 2016.
Peoa’s center stands about 6,200 ft above sea level. Within three miles the land runs from 6,060 ft to 7,630 ft, a difference of 1,570 ft: steep hill country. The highest named summit within 15 miles is Clayton Peak, about 10,670 ft, 15 miles southwest.
Under the town center the state geologic map shows Alluvium and colluvium (unconsolidated), from the Quaternary, less than 2.6 million years old.
The section below crosses 14 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.
Andesite. Age: Late Eocene to Oligocene, 23 to 38 million years old. About 7 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 5 mi of the line.
Sandstone, shale. Age: Late Cretaceous, 87 to 94 million years old. About 3 mi of the line.
Arenite. Age: Mesoproterozoic to Neoproterozoic, 542 to 1,600 million years old. About 2 mi of the line.
Arenite. Age: Middle Pennsylvanian to Permian, 290 to 315 million years old. About 2 mi of the line.
Coarse-detrital. Age: Quaternary, less than 2.6 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. 8 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 Peoa reaches Great Salt Lake by way of the Weber: about 95 river miles. Great Salt Lake has no outlet to the sea: the water leaves only by evaporating or soaking into the ground.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Peoa; river miles along the main stem, rounded.
Peoa has a warm-summer humid continental climate. Summer afternoons average 87° in July; winter nights fall to about 13° in January. A normal year brings about 72 inches of snow; with the rain, that comes to about 16 inches of water.
On November 14 Peoa normally reaches 48° and falls to 22°. The record high is 69°, in 1999; the record low 0°, in 1982. The most rain on this date, 0.97 in, fell in 2006.
Normals 1991–2020 and records since 1955 at Wanship Dam, 6 miles northwest, 260 ft lower. NOAA, through RCC-ACIS.
