The Wall Lane 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.
Wall Lane’s center stands about 110 ft above sea level. Within three miles the land runs from 100 ft to 120 ft, a difference of 20 ft: nearly flat ground. The highest named summit within 15 miles is Stud Mountain, about 2,060 ft, 14 miles north.
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 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 28×. 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, silt, clay. Age: Pleistocene to Holocene, less than 2 million years old. About 8 mi of the line.
Sand, gravel. Age: Holocene, less than 10,000 years old. About 8 mi of the line.
Coarse-detrital. Age: Pleistocene, less than 2.6 million years old. About 6 mi of the line.
Granodiorite. Age: Permian to Tertiary, 2.6 to 260 million years old. About 1 mi of the line.
Gneiss. Age: Paleoproterozoic to Miocene, 5.3 to 2,500 million years old. About 0.8 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.
Wall Lane 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 Wall Lane 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, 6 miles east). NOAA, through RCC-ACIS.
