The Friedensburg 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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75° on Nov. 16, 1993, the hottest reading for this week of the year since 1978. Next is 75° in 2020.
Friedensburg’s center stands about 690 ft above sea level. Within three miles the land runs from 580 ft to 1,460 ft, a difference of 880 ft: hilly country. The highest named summit within 15 miles is Ashland Mountain, about 1,770 ft, 12 miles north.
Under the town center the state geologic map shows Hamilton Group (black-shale), from the Early Devonian to Middle Devonian, 384 to 422 million years old.
The section below crosses 12 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 15×. 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. Age: Ordovician, 445 to 487 million years old. About 5 mi of the line.
Sandstone. Age: Carboniferous, 299 to 324 million years old. About 5 mi of the line.
Black-shale. Age: Early Devonian to Middle Devonian, 384 to 422 million years old. About 2 mi of the line.
Sandstone. Age: Carboniferous, 299 to 324 million years old. About 2 mi of the line.
Shale, siltstone, sandstone. Age: Carboniferous, 324 to 359 million years old. About 2 mi of the line.
Sandstone, conglomerate. Age: Silurian, 422 to 445 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. 6 smaller units 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 Friedensburg reaches Delaware Bay and the Atlantic Ocean by way of the Schuylkill and the Delaware: about 180 river miles.
120 miles of the trip are on the Schuylkill.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Friedensburg; river miles along the main stem, rounded.
Friedensburg has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 19° in January. About 48 inches of rain fall in a normal year.
On November 14 Friedensburg normally reaches 53° and falls to 33°. The record high is 70°, in 2022; the record low 17°, in 1986. The most rain on this date, 1.50 in, fell in 1983.
Normals 1991–2020 and records since 1978 at Blue Marsh Lake, 19 miles southeast, 340 ft lower. NOAA, through RCC-ACIS.
