The Pleasant Grove 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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77° on Nov. 12, 1990, the hottest reading for this week of the year since 1946. Next is 76° in 2024.
Pleasant Grove’s center stands about 4,630 ft above sea level. Within three miles the land runs from 4,480 ft to 7,820 ft, a difference of 3,340 ft: mountain country. The highest named summit within 15 miles is Mount Timpanogos, about 11,560 ft, 5 miles east-northeast.
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 8 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 3×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone. Age: Carboniferous to Permian, 273 to 324 million years old. About 7 mi of the line.
Clay. Age: Pleistocene, less than 2.6 million years old. About 4 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 2 mi of the line.
Limestone. Age: Early Mississippian to Late Mississippian, 324 to 359 million years old. About 1 mi of the line.
Unconsolidated. Age: Pleistocene, less than 2.6 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. 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 Pleasant Grove reaches Great Salt Lake by way of Utah Lake and the Jordan: about 60 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: Utah Lake.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Pleasant Grove; river miles along the main stem, rounded.
Pleasant Grove has a hot-summer Mediterranean climate. Summer afternoons average 93° in July; winter nights fall to about 24° in January. A normal year brings about 41 inches of snow; with the rain, that comes to about 16 inches of water.
On November 14 Pleasant Grove normally reaches 54° and falls to 33°. The record high is 74°, in 1967; the record low 13°, in 1959. The most rain on this date, 0.77 in, fell in 1987.
Normals 1991–2020 and records since 1946 at Pleasant Grove, here. NOAA, through RCC-ACIS.
