The India Hook 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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Mostly sunny; warmer
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18° on Nov. 15, 1969, the coldest reading for this week of the year since 1899. Next is 20° in 1933.
India Hook’s center stands about 660 ft above sea level. Within three miles the land runs from 500 ft to 720 ft, a difference of 220 ft: rolling country. The highest named summit within 15 miles is Nanny Mountain, about 1,000 ft, 7 miles northwest.
Under the town center the state geologic map shows Metamorphosed granite and granodiorite (metagranite, metadiorite), from the Neoproterozoic to Cambrian, 487 to 1,000 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 35×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Metagranite, metadiorite. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 13 mi of the line.
Metavolcanic, gneiss. Age: Neoproterozoic to Ordovician, 445 to 1,000 million years old. About 4 mi of the line.
Gabbro. Age: Silurian to Devonian, 359 to 445 million years old. About 2 mi of the line.
Metagabbro. Age: Neoproterozoic to Devonian, 359 to 1,000 million years old. About 2 mi of the line.
Phyllite, mica-schist. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 2 mi of the line.
Phyllonite, schist. Age: Paleozoic, 252 to 542 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 India Hook reaches the Atlantic Ocean by way of the Catawba, the Wateree, the Congaree, the Santee and the South Santee: about 270 river miles.
Lake on the way: Lib Pines Lake.
90 miles of the trip are on the Wateree.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of India Hook; river miles along the main stem, rounded.
India Hook has a humid subtropical climate. Summer afternoons average 91° in July; winter nights fall to about 32° in January. About 43 inches of rain fall in a normal year.
On November 14 India Hook normally reaches 64° and falls to 41°. The record high is 81°, in 1931; the record low 21°, in 2013. The most rain on this date, 1.33 in, fell in 1940.
Normals 1991–2020 and records since 1899 at Winthrop University, 5 miles south. NOAA, through RCC-ACIS.
