The Altamonte Springs 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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5.29 inches of rain fell in two days, the most for this week of the year since records began in 1892. The next wettest, 4.41 inches, fell in 1951.
Altamonte Springs’s center stands about 100 ft above sea level. Within three miles the land runs from 50 ft to 120 ft, a difference of 70 ft: gently rolling country.
Under the town center the state geologic map shows Cypresshead Formation (sand), from the Late Pliocene, 2.6 to 3.6 million years old.
The section below crosses 3 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. Age: Late Pliocene, 2.6 to 3.6 million years old. About 15 mi of the line.
Sand, clay. Age: Pleistocene to Holocene, less than 2.6 million years old. About 5 mi of the line.
Sand. Age: Holocene, less than 12,000 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.
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 Altamonte Springs reaches the St. Johns River and the Atlantic Ocean by way of the Little Wekiva, the Wekiva, Blue Creek and Trout Creek: about 180 river miles.
Lake on the way: George, Lake.
100 miles of the trip are on Trout Creek.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Altamonte Springs; river miles along the main stem, rounded.
Altamonte Springs has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 52° in January. About 52 inches of rain fall in a normal year.
On November 14 Altamonte Springs normally reaches 78° and falls to 60°. The record high is 87°, in 2018; the record low 34°, in 1906. The most rain on this date, 1.65 in, fell in 1908.
Normals 1991–2020 and records since 1892 at Orlando Executive Airport, 8 miles south-southeast. NOAA, through RCC-ACIS.
