The Ila 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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19° on Nov. 16, 1940, the coldest reading for this week of the year since 1857. Next is 20° in 1916.
Ila’s center stands about 820 ft above sea level. Within three miles the land runs from 720 ft to 910 ft, a difference of 190 ft: gently rolling country.
Under the town center the state geologic map shows Biotitic Gneiss / Mica Schist/ Amphibolite (amphibolite, biotite-gneiss, mica-schist), from the Precambrian to Paleozoic.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 42×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Amphibolite, biotite-gneiss, mica-schist. Age: Precambrian to Paleozoic. About 10 mi of the line.
Biotite-gneiss, amphibolite. Age: Precambrian to Paleozoic. About 5 mi of the line.
Hornblende-gneiss, amphibolite. Age: Precambrian to Paleozoic. About 4 mi of the line.
Schist. Age: Precambrian to Paleozoic. About 4 mi of the line.
Schist, gneiss. Age: Precambrian to Paleozoic. About 0.8 mi of the line.
Mica-schist. Age: Precambrian to Paleozoic. 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 Ila reaches the Atlantic Ocean by way of the South Fork Broad, the Broad and the Savannah: about 310 river miles.
250 miles of the trip are on the Savannah.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Ila; river miles along the main stem, rounded.
Ila has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 34° in January. About 49 inches of rain fall in a normal year.
On November 14 Ila normally reaches 65° and falls to 42°. The record high is 84°, in 1931; the record low 23°, in 2013. The most rain on this date, 1.10 in, fell in 1983.
Normals 1991–2020 and records since 1857 from the Athens Area threaded record (Athens Ben Epps Airport, 16 miles south). NOAA, through RCC-ACIS.
