The Efland 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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4.30 inches of rain fell in two days, the most for this week of the year since records began in 1891. The next wettest, 4.15 inches, fell in 2018.
Efland’s center stands about 660 ft above sea level. Within three miles the land runs from 570 ft to 760 ft, a difference of 190 ft: gently rolling country. The highest named summit within 15 miles is Occoneechee Mountain, about 870 ft, 3 miles east-southeast.
Under the town center the state geologic map shows Intermediate Metavolcanic Rock (metaandesite), from the Neoproterozoic to Cambrian, 487 to 1,000 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 44×. 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. Age: Neoproterozoic to Middle Cambrian, 520 to 650 million years old. About 12 mi of the line.
Metaandesite. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 5 mi of the line.
Metadacite, metarhyolite, metavolcanic. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 4 mi of the line.
Metabasalt. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 1 mi of the line.
Phyllite, schist. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 0.6 mi of the line.
Metasedimentary. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 0.3 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 Efland reaches Pamlico Sound and the Atlantic Ocean by way of McGowan Creek, the Eno and the Neuse: about 290 river miles.
230 miles of the trip are on the Neuse.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Efland; river miles along the main stem, rounded.
Efland has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 29° in January. About 49 inches of rain fall in a normal year, with about 3 inches of snow.
On November 14 Efland normally reaches 62° and falls to 38°. The record high is 81°, in 1951; the record low 17°, in 1905. The most rain on this date, 1.55 in, fell in 1940.
Normals 1991–2020 and records since 1891 at Chapel Hill 2 W, 13 miles south-southeast, 160 ft lower. NOAA, through RCC-ACIS.
