The Bluffdale 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.
70° on Nov. 12, 1967, the hottest reading for this week of the year since 1904. Next is 70° in 1973.
Bluffdale’s center stands about 4,440 ft above sea level. Within three miles the land runs from 4,340 ft to 5,400 ft, a difference of 1,060 ft: steep hill country. The highest named summit within 15 miles is Twin Peaks, about 11,240 ft, 14 miles east-northeast.
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 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.
Clay. Age: Pleistocene, less than 2.6 million years old. About 8 mi of the line.
Latite, quartz-latite. Age: Late Eocene to Oligocene, 23 to 38 million years old. About 6 mi of the line.
Granodiorite. Age: Middle Eocene to Early Oligocene, 30 to 42 million years old. About 5 mi of the line.
Sandstone. Age: Carboniferous to Permian, 273 to 324 million years old. About 2 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 2 mi of the line.
Limestone. Age: Early Mississippian to Late Mississippian, 324 to 359 million years old. About 0.7 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 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 Bluffdale reaches Great Salt Lake by way of the Jordan: about 40 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 Bluffdale; river miles along the main stem, rounded.
Bluffdale has a cold semi-arid climate. Summer afternoons average 92° in July; winter nights fall to about 19° in January. A normal year brings about 26 inches of snow; with the rain, that comes to about 13 inches of water.
On November 14 Bluffdale normally reaches 49° and falls to 27°. The record high is 67°, in 1967; the record low 3°, in 1956. The most rain on this date, 0.68 in, fell in 1987.
Normals 1991–2020 and records since 1904 at Utah Lake Lehi, 9 miles south-southeast. NOAA, through RCC-ACIS.