The Castlewood 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 cloudy; warmer
Mostly sunny
Partly cloudy
Sunny
Mostly sunny
Mostly sunny
10° on Nov. 13, 2019, the coldest reading for this week of the year since 1989. Next is 12° in 2014.
Castlewood’s center stands about 1,610 ft above sea level. Within three miles the land runs from 1,470 ft to 2,480 ft, a difference of 1,010 ft: steep hill country. The highest named summit within 15 miles is Brumley Mountain, about 4,250 ft, 14 miles east-southeast.
Under the town center the state geologic map shows Nolichucky and Honaker Formations (shale, dolostone), from the Cambrian, 487 to 542 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 7×. 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, siltstone. Age: Carboniferous, 299 to 324 million years old. About 9 mi of the line.
Shale, dolostone. Age: Cambrian, 487 to 542 million years old. About 6 mi of the line.
Dolostone, limestone. Age: Cambrian to Ordovician, 445 to 542 million years old. About 3 mi of the line.
Shale. Age: Ordovician, 445 to 487 million years old. About 3 mi of the line.
Shale. Age: Ordovician, 445 to 487 million years old. About 2 mi of the line.
Arenite, sandstone, conglomerate. Age: Carboniferous, 299 to 324 million years old. About 0.7 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 Castlewood reaches the Gulf of America by way of the Clinch, the Tennessee, the Ohio and the Mississippi: about 1,820 river miles.
Lakes on the way: Guntersville Lake, White Lake (historical), Pickwick Lake and Cummings Lake.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Castlewood; river miles along the main stem, rounded.
Castlewood has a humid subtropical climate. Summer afternoons average 84° in July; winter nights fall to about 23° in January. A normal year brings about 12 inches of snow; with the rain, that comes to about 46 inches of water.
On November 14 Castlewood normally reaches 58° and falls to 31°. The record high is 73°, in 1994; the record low 10°, in 2019. The most rain on this date, 0.42 in, fell in 2008.
Normals 1991–2020 and records since 1989 at Lebanon, 13 miles east, 300 ft higher. NOAA, through RCC-ACIS.
