The Salford 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. 11, 2020, the hottest reading for this week of the year since 1948. Next is 72° in 2005.
Salford’s center stands about 470 ft above sea level. Within three miles the land runs from 230 ft to 600 ft, a difference of 370 ft: rolling country. The highest named summit within 15 miles is Sand Hill, about 1,070 ft, 15 miles west.
Under the town center the state geologic map shows Brunswick Formation (mudstone), from the Triassic, 202 to 252 million years old.
The section below crosses 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 31×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mudstone. Age: Triassic, 202 to 252 million years old. About 11 mi of the line.
Basalt. Age: Jurassic, 145 to 202 million years old. About 5 mi of the line.
Argillite. Age: Triassic, 202 to 252 million years old. About 3 mi of the line.
Gneiss. Age: Precambrian. About 3 mi of the line.
Conglomerate. Age: Triassic, 202 to 252 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 Salford reaches Delaware Bay and the Atlantic Ocean by way of East Branch Perkiomen Creek, Perkiomen Creek, the Schuylkill and the Delaware: about 110 river miles.
60 miles of the trip are on the Delaware.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Salford; river miles along the main stem, rounded.
Salford has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 19° in January. A normal year brings about 22 inches of snow; with the rain, that comes to about 52 inches of water.
On November 14 Salford normally reaches 54° and falls to 32°. The record high is 66°, in 2010; the record low 18°, in 1996. The most rain on this date, 0.55 in, fell in 2008.
Normals 1991–2020 and records since 1948 at Sellersville, 5 miles east-northeast, 170 ft lower. NOAA, through RCC-ACIS.
