The Franklin 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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12° on Nov. 15, 1969, the coldest reading for this week of the year since 1955. Next is 13° in 2019.
Franklin’s center stands about 720 ft above sea level. Within three miles the land runs from 590 ft to 770 ft, a difference of 180 ft: gently rolling country. The highest named summit within 15 miles is Pilot Knob, about 950 ft, 9 miles northwest.
Under the town center the state geologic map shows Ste. Genevieve and St. Louis Limestones, undivided, from the Carboniferous, 324 to 359 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.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 16 mi of the line.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 5 mi of the line.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 2 mi of the line.
Limestone, sandstone. Age: Carboniferous, 324 to 359 million years old. About 0.7 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 Franklin reaches the Gulf of America by way of West Fork Drakes Creek, Drakes Creek, the Barren, the Green River, the Ohio and the Mississippi: about 1,400 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Franklin; river miles along the main stem, rounded.
Franklin has a humid subtropical climate. Summer afternoons average 89° in July; winter nights fall to about 27° in January. About 54 inches of rain fall in a normal year, with about 2 inches of snow.
On November 14 Franklin normally reaches 59° and falls to 38°. The record high is 77°, in 1964; the record low 15°, in 2019. The most rain on this date, 1.54 in, fell in 2024.
Normals 1991–2020 and records since 1955 at Portland Sewage Plant, 10 miles south-southeast. NOAA, through RCC-ACIS.
