The Mountain Top 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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72° on Nov. 11, 2020, the hottest reading for this week of the year since 1958. Next is 71° in 2012.
Mountain Top’s center stands about 1,420 ft above sea level. Within three miles the land runs from 1,110 ft to 1,930 ft, a difference of 820 ft: hilly country. The highest named summit within 15 miles is Bald Mountain, about 2,150 ft, 11 miles northeast.
Under the town center the state geologic map shows Sherman Creek Member of Catskill Formation (siltstone, mudstone), from the Late Devonian, 359 to 384 million years old.
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 13×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone. Age: Carboniferous, 299 to 324 million years old. About 7 mi of the line.
Shale, siltstone, sandstone. Age: Carboniferous, 324 to 359 million years old. About 6 mi of the line.
Sandstone. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Siltstone, mudstone. Age: Late Devonian, 359 to 384 million years old. About 3 mi of the line.
Sandstone, siltstone. Age: Late Devonian, 359 to 384 million years old. About 2 mi of the line.
Sandstone. Age: Carboniferous, 324 to 359 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.
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 Mountain Top reaches Chesapeake Bay and the Atlantic Ocean by way of Big Wapwallopen Creek and the Susquehanna: about 190 river miles.
Lake on the way: Lake Aldred.
130 miles of the trip are on the Susquehanna.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Mountain Top; river miles along the main stem, rounded.
Mountain Top has a warm-summer humid continental climate. Summer afternoons average 79° in July; winter nights fall to about 16° in January. About 49 inches of rain fall in a normal year.
On November 14 Mountain Top normally reaches 48° and falls to 30°. The record high is 65°, in 1964; the record low 10°, in 1997. The most rain on this date, 0.91 in, fell in 1972.
Normals 1991–2020 and records since 1958 at Francis E Walter Dam, 9 miles east. NOAA, through RCC-ACIS.
