The Gallatin 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
Mostly sunny; warmer
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Partly cloudy
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15° on Nov. 13, 2019, the coldest reading for this week of the year since 1990. Next is 20° in 1997.
Gallatin’s center stands about 540 ft above sea level. Within three miles the land runs from 460 ft to 710 ft, a difference of 250 ft: rolling country. The highest named summit within 15 miles is Gravely Hill, about 1,100 ft, 14 miles east-northeast.
Under the town center the state geologic map shows Ordovician [units] including Richmond Group (which includes Mannie Shale, Fernvale Limestone, Sequatchie Formation, and Arnheim Formation), the Maysville Group (which includes Leipers Formation), the Eden Group (which includes Inman Formation), and the Nashville Group (which includes Catheys Formation) (shale, limestone), from the Ordovician, 445 to 487 million years old.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 34×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale, limestone. Age: Ordovician, 445 to 487 million years old. About 8 mi of the line.
Limestone. Age: Ordovician, 445 to 487 million years old. About 5 mi of the line.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 3 mi of the line.
Chert. Age: Carboniferous, 324 to 359 million years old. About 3 mi of the line.
Fine-detrital, coarse-detrital. Age: Quaternary, less than 2.6 million years old. About 3 mi of the line.
Limestone. Age: Ordovician, 445 to 487 million 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. 1 smaller unit along the line are not listed.
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 Gallatin reaches the Gulf of America by way of East Camp Creek, the Cumberland, the Ohio and the Mississippi: about 1,270 river miles.
Lake on the way: Bards 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 Gallatin; river miles along the main stem, rounded.
Gallatin has a humid subtropical climate. Summer afternoons average 89° in July; winter nights fall to about 28° in January. About 55 inches of rain fall in a normal year, with about 5 inches of snow.
On November 14 Gallatin normally reaches 60° and falls to 38°. The record high is 76°, in 1993; the record low 17°, in 2019. The most rain on this date, 1.18 in, fell in 1993.
Normals 1991–2020 and records since 1990 at Old Hickory Wfo, 12 miles south-southwest. NOAA, through RCC-ACIS.
