The Grantsville 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.
Partly cloudy
Partly cloudy; warmer
Mostly cloudy
Showers likely
Partly cloudy
Showers likely
Showers likely
69° on Nov. 12, 2024, the hottest reading for this week of the year since 1906. Next is 68° in 1999.
Grantsville’s center stands about 4,310 ft above sea level. Within three miles the land runs from 4,230 ft to 4,760 ft, a difference of 530 ft: hilly country. The highest named summit within 15 miles is Deseret Peak, about 10,960 ft, 13 miles southwest.
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 10 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.
Clay. Age: Pleistocene, less than 2.6 million years old. About 5 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 5 mi of the line.
Clay. Age: Holocene, less than 12,000 years old. About 3 mi of the line.
Unconsolidated. Age: Pliocene to Pleistocene, less than 5.3 million years old. About 2 mi of the line.
Peat. Age: Holocene, less than 12,000 years old. About 1 mi of the line.
Arenite. Age: Early Cambrian, 521 to 542 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. 4 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.
Rain that falls on Grantsville runs straight into Great Salt Lake. 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 Grantsville; river miles along the main stem, rounded.
Grantsville 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 33 inches of snow; with the rain, that comes to about 12 inches of water.
Normals 1991–2020 and records since 1906 at Grantsville 2 W, 2 miles west, 240 ft higher. NOAA, through RCC-ACIS.
