The Iva 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.
Sunny
Sunny; warmer
Sunny
Sunny
Sunny
Mostly sunny
Mostly sunny
20° on Nov. 13, 2013, the coldest reading for this week of the year since 1948. Next is 21° in 1997.
Iva’s center stands about 720 ft above sea level. Within three miles the land runs from 550 ft to 760 ft, a difference of 210 ft: rolling country. The highest named summit within 15 miles is Little Mountain, about 900 ft, 9 miles north-northwest.
Under the town center the state geologic map shows Gneissic granite of Starr, from the Ordovician to Silurian, 422 to 487 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 52×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gneiss. Age: Ordovician to Silurian, 422 to 487 million years old. About 9 mi of the line.
Biotite-gneiss, mica-schist. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 6 mi of the line.
Gneiss. Age: Ordovician to Silurian, 422 to 487 million years old. About 4 mi of the line.
Amphibolite, metabasalt, metagabbro. Age: Neoproterozoic to Paleozoic, 252 to 1,000 million years old. About 2 mi of the line.
Metagranite. Age: Neoproterozoic to Devonian, 359 to 1,000 million years old. About 2 mi of the line.
Phyllonite, schist. Age: Paleozoic, 252 to 542 million years old. About 1.0 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 Iva reaches the Atlantic Ocean by way of East Prong Little Generostee Creek, Little Generostee Creek and the Savannah: about 280 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Iva; river miles along the main stem, rounded.
Iva has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 33° in January. About 46 inches of rain fall in a normal year.
On November 14 Iva normally reaches 64° and falls to 41°. The record high is 79°, in 2007; the record low 22°, in 2013. The most rain on this date, 1.44 in, fell in 1961.
Normals 1991–2020 and records since 1948 at Anderson Regional Airport, 13 miles north-northwest. NOAA, through RCC-ACIS.
