The Collinwood 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.
Sunny
Partly cloudy; warmer
Sunny
Partly cloudy
Mostly sunny
Mostly sunny
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8° on Nov. 16, 1940, the coldest reading for this week of the year since 1891. Next is 10° in 1943.
Collinwood’s center stands about 1,060 ft above sea level. Within three miles the land runs from 780 ft to 1,100 ft, a difference of 320 ft: rolling country.
Under the town center the state geologic map shows Tuscaloosa Formation (gravel), from the Cretaceous, 66 to 145 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 35×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Chert. Age: Carboniferous, 324 to 359 million years old. About 19 mi of the line.
Gravel. Age: Cretaceous, 66 to 145 million years old. About 3 mi of the line.
Limestone. Age: Silurian, 422 to 445 million years old. About 2 mi of the line.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 0.4 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 Collinwood reaches the Gulf of America by way of Indian Creek, the Tennessee, the Ohio and the Mississippi: about 1,230 river miles.
Lake on the way: Pickwick Lake.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Collinwood; river miles along the main stem, rounded.
Collinwood has a humid subtropical climate. Summer afternoons average 88° in July; winter nights fall to about 27° in January. About 62 inches of rain fall in a normal year, with about 1 inch of snow.
On November 14 Collinwood normally reaches 61° and falls to 34°. The record high is 81°, in 1985; the record low 13°, in 2019. The most rain on this date, 2.47 in, fell in 1957.
Normals 1991–2020 and records since 1891 at Waynesboro, 9 miles north, 310 ft lower. NOAA, through RCC-ACIS.
