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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80° on Nov. 15, 1993, the hottest reading for this week of the year since 1894. Next is 77° in 1973.
Franklin’s center stands about 310 ft above sea level. Within three miles the land runs from 200 ft to 470 ft, a difference of 270 ft: rolling country. The highest named summit within 15 miles is Goat Hill, about 500 ft, 13 miles west.
Under the town center the state geologic map shows "Glenarm Wissahickon" formation (mica-schist), from the Paleozoic, 252 to 542 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 32×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mica-schist. Age: Paleozoic, 252 to 542 million years old. About 13 mi of the line.
Fine-detrital, coarse-detrital. Age: Pleistocene, less than 2.6 million years old. About 3 mi of the line.
Gneiss, quartz-diorite, granodiorite. Age: Neoproterozoic to Middle Cambrian, 500 to 600 million years old. About 3 mi of the line.
Sand. Age: Cretaceous, 66 to 145 million years old. About 2 mi of the line.
Gravel, sand. Age: Pleistocene, less than 2.6 million years old. About 1 mi of the line.
Muscovite-schist. Age: Proterozoic, 542 to 2,500 million years old. About 1 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 Franklin reaches Delaware Bay and the Atlantic Ocean by way of West Branch White Clay Creek, White Clay Creek, the Christina and the Delaware: about 65 river miles.
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 25° in January. About 47 inches of rain fall in a normal year.
On November 14 Franklin normally reaches 57° and falls to 36°. The record high is 75°, in 1955; the record low 19°, in 1986. The most rain on this date, 2.53 in, fell in 1972.
Normals 1991–2020 and records since 1894 at Newark Ag Farm, 8 miles southeast, 200 ft lower. NOAA, through RCC-ACIS.
