The El Prado Estates 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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30° on Nov. 17, 1958, the coldest reading for this week of the year since 1876. Next is 33° in 1964.
El Prado Estates’s center stands about 150 ft above sea level. Within three miles the land runs from 130 ft to 220 ft, a difference of 90 ft: gently rolling country. The highest named summit within 15 miles is Boot Peak, about 1,020 ft, 9 miles northeast.
Under the town center the state geologic map shows Holocene river alluvium (sand, gravel), from the Holocene, less than 10,000 years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 20×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sand, gravel. Age: Holocene, less than 10,000 years old. About 16 mi of the line.
Sand, silt, clay. Age: Pleistocene to Holocene, less than 2 million years old. About 5 mi of the line.
Diorite, alkali-granite, granodiorite. Age: Early Jurassic to Late Jurassic, 150 to 180 million years old. About 2 mi of the line.
Metasedimentary, metavolcanic, gneiss. Age: Paleoproterozoic, 1.6 to 1.8 billion years old. About 2 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 El Prado Estates reaches the Gulf of California by way of the Gila and the Colorado: about 130 river miles.
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 El Prado Estates; river miles along the main stem, rounded.
El Prado Estates has a hot desert climate. Summer afternoons average 107° in July; winter nights fall to about 47° in December. About 3 inches of rain fall in a normal year.
On November 14 El Prado Estates normally reaches 78° and falls to 55°. The record high is 93°, in 1906; the record low 37°, in 1929. The most rain on this date, 0.50 in, fell in 1899.
Normals 1991–2020 and records since 1876 from the Yuma Area threaded record (Yuma International Airport, 5 miles west-southwest). NOAA, through RCC-ACIS.
