The Lynndyl 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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75° on Nov. 16, 2016, the hottest reading for this week of the year since 1905. Next is 73° in 1934.
Lynndyl’s center stands about 4,790 ft above sea level. Within three miles the land runs from 4,680 ft to 4,840 ft, a difference of 160 ft: gently rolling country. The highest named summit within 15 miles is Fool Creek Peak, about 9,650 ft, 13 miles southeast.
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 5 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.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 10 mi of the line.
Sand. Age: Quaternary, less than 2.6 million years old. About 6 mi of the line.
Clay. Age: Pleistocene, less than 2.6 million years old. About 5 mi of the line.
Arenite. Age: Neoproterozoic, 542 to 1,000 million years old. About 3 mi of the line.
Arenite. Age: Early Cambrian to Middle Cambrian, 497 to 542 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.
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 Lynndyl reaches Sevier Lake by way of the Sevier: about 95 river miles. Sevier Lake has no outlet to the sea: the water leaves only by evaporating or soaking into the ground.
Often dry. About 40% of the way is mapped as streams that run only after rain or snowmelt; the water makes the whole trip in floods.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Lynndyl; river miles along the main stem, rounded.
Lynndyl has a cold semi-arid climate. Summer afternoons average 93° in July; winter nights fall to about 20° in January. A normal year brings about 33 inches of snow; with the rain, that comes to about 14 inches of water.
On November 14 Lynndyl normally reaches 52° and falls to 29°. The record high is 72°, in 1997; the record low 5°, in 1938. The most rain on this date, 0.83 in, fell in 1988.
Normals 1991–2020 and records since 1905 at Oak City, 11 miles south-southeast, 380 ft higher. NOAA, through RCC-ACIS.
