The Collierville 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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15° on Nov. 13, 2019, the coldest reading for this week of the year since 1996. Next is 19° in 1997.
Collierville’s center stands about 380 ft above sea level. Within three miles the land runs from 290 ft to 430 ft, a difference of 140 ft: gently rolling country.
Under the town center the state geologic map shows Loess (silt), from the Quaternary, less than 2.6 million 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 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Silt. Age: Quaternary, less than 2.6 million years old. About 16 mi of the line.
Claystone, clay. Age: Eocene, 34 to 56 million years old. About 7 mi of the line.
Fine-detrital, coarse-detrital. Age: Quaternary, less than 2.6 million years old. About 1 mi of the line.
Sand, clay. Age: Eocene, 34 to 56 million years old. About 0.6 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 Collierville reaches the Gulf of America by way of Nonconnah Creek and the Mississippi: about 780 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Collierville; river miles along the main stem, rounded.
Collierville has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 29° in January. About 57 inches of rain fall in a normal year, with about 1 inch of snow.
Normals 1991–2020 and records since 1996 at Collierville, 2 miles north. NOAA, through RCC-ACIS.
