The Holly Hill 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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10.52 inches of rain fell in two days, the most for this week of the year since records began in 1923. The next wettest, 8.20 inches, fell in 2023.
Holly Hill’s center stands about 20 ft above sea level. Within three miles the land runs from 0 ft to 50 ft, a difference of 50 ft: nearly flat ground. Open water lies within three miles.
Under the town center the state geologic map shows Anastasia Formation (sand, limestone), from the Pleistocene, less than 2.6 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sand, clay. Age: Pleistocene to Holocene, less than 2.6 million years old. About 9 mi of the line.
Sand, limestone. Age: Pleistocene, less than 2.6 million years old. About 4 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 Holly Hill reaches the Atlantic Ocean by way of Bulow Creek: about 12 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Holly Hill; river miles along the main stem, rounded.
Holly Hill has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 48° in January. About 51 inches of rain fall in a normal year.
On November 14 Holly Hill normally reaches 76° and falls to 58°. The record high is 86°, in 2008; the record low 38°, in 1963. The most rain on this date, 4.09 in, fell in 2001.
Normals 1991–2020 and records since 1923 from the Daytona Beach Area threaded record (Daytona Beach International Airport, 5 miles south-southwest). NOAA, through RCC-ACIS.
