The Leona 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.
3.91 inches of rain fell in two days, the most for this week of the year since records began in 1937. The next wettest, 2.94 inches, fell in 1987.
Leona’s center stands about 360 ft above sea level. Within three miles the land runs from 260 ft to 440 ft, a difference of 180 ft: gently rolling country.
Under the town center the state geologic map shows Cook Mountain Formation (claystone, sandstone), from the Eocene, 34 to 56 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 53×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Claystone, sandstone. Age: Eocene, 34 to 56 million years old. About 20 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 2 mi of the line.
Sandstone. Age: Eocene, 34 to 56 million years old. About 2 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 Leona reaches Galveston Bay and the Gulf of America by way of Leona Branch, Mustang Creek, Boggy Creek and the Trinity: about 230 river miles.
Lake on the way: Woodlands Golf Course Lake.
120 miles of the trip are on the Trinity.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Leona; river miles along the main stem, rounded.
Leona has a humid subtropical climate. Summer afternoons average 95° in August; winter nights fall to about 35° in January. About 42 inches of rain fall in a normal year.
On November 14 Leona normally reaches 70° and falls to 44°. The record high is 88°, in 1955; the record low 21°, in 2019. The most rain on this date, 0.45 in, fell in 1993.
Normals 1991–2020 and records since 1937 at Centerville, 7 miles north. NOAA, through RCC-ACIS.