The Aneth 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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9° on Nov. 16, 2000, the coldest reading for this week of the year since 1957. Next is 10° in 1975.
Aneth’s center stands about 4,490 ft above sea level. Within three miles the land runs from 4,440 ft to 4,960 ft, a difference of 520 ft: hilly country. The highest named summit within 15 miles is White Mesa, about 5,830 ft, 11 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 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 14×. 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-mudstone. Age: Late Jurassic, 145 to 164 million years old. About 13 mi of the line.
Sand. Age: Quaternary, less than 2.6 million years old. About 5 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 4 mi of the line.
Sandstone. Age: Early Cretaceous to Late Cretaceous, 94 to 125 million years old. About 1 mi of the line.
Sandstone, mudstone, claystone. Age: Late Jurassic, 145 to 164 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.
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 Aneth reaches the Gulf of California by way of the San Juan and the Colorado: about 1,020 river miles.
Lakes on the way: Lake Mead, Lake Powell, Lake Mohave and Lake Havasu.
290 miles of the trip are on the Colorado.
Seldom reaches the sea. Dams and canals now take nearly all of the Colorado before its old delta in Mexico.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Aneth; river miles along the main stem, rounded.
Aneth has a cold semi-arid climate. Summer afternoons average 96° in July; winter nights fall to about 18° in January. A normal year brings about 12 inches of snow; with the rain, that comes to about 10 inches of water.
On November 14 Aneth normally reaches 57° and falls to 26°. The record high is 71°, in 1995; the record low 13°, in 1975. The most rain on this date, 0.38 in, fell in 1962.
Normals 1991–2020 and records since 1957 at Hovenweep National Monument, 13 miles north-northeast, 750 ft higher. NOAA, through RCC-ACIS.
