The Branchburg 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.
Partly cloudy
Mostly sunny; warmer
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Sunny
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74° on Nov. 12, 2006, the hottest reading for this week of the year since 1956. Next is 74° in 2020.
Branchburg’s center stands about 150 ft above sea level. Within three miles the land runs from 50 ft to 240 ft, a difference of 190 ft: gently rolling country. The highest named summit within 15 miles is Fox Hill, about 1,040 ft, 13 miles north-northwest.
Under the town center the state geologic map shows Passaic Formation (siltstone, shale), from the Early Jurassic to Late Jurassic, 145 to 202 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 23×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Siltstone, shale. Age: Early Jurassic to Late Jurassic, 145 to 202 million years old. About 18 mi of the line.
Granite. Age: Mesoproterozoic, 1.1 to 1.1 billion years old. About 2 mi of the line.
Siltstone. Age: Late Triassic to Early Jurassic, 175 to 237 million years old. About 2 mi of the line.
Gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 0.8 mi of the line.
Sandstone, siltstone. Age: Early Jurassic, 175 to 202 million years old. About 0.5 mi of the line.
Conglomerate. Age: Early Jurassic to Late Jurassic, 145 to 202 million years old. About 0.5 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 Branchburg reaches New York Harbor and the Atlantic Ocean by way of Holland Brook and the Raritan: about 30 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Branchburg; river miles along the main stem, rounded.
Branchburg has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 22° in January. A normal year brings about 24 inches of snow; with the rain, that comes to about 51 inches of water.
Normals 1991–2020 and records since 1956 at Wertsville 4 NE, 8 miles south-southwest, 130 ft higher. NOAA, through RCC-ACIS.
