The Oglesby 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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3.23 inches of rain fell in two days, the most for this week of the year since records began in 1901. The next wettest, 2.96 inches, fell in 1907.
Oglesby’s center stands about 850 ft above sea level. Within three miles the land runs from 710 ft to 900 ft, a difference of 190 ft: gently rolling country. The highest named summit within 15 miles is Henson Mountains, about 1,020 ft, 14 miles west-southwest.
Under the town center the state geologic map shows Grayson Marl and Main Street Limestone, undivided (marlstone, limestone), from the Early Cretaceous to Late Cretaceous, 66 to 145 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 43×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Marlstone, limestone. Age: Early Cretaceous to Late Cretaceous, 66 to 145 million years old. About 11 mi of the line.
Claystone. Age: Early Cretaceous, 100 to 145 million years old. About 5 mi of the line.
Claystone, limestone. Age: Early Cretaceous, 100 to 145 million years old. About 3 mi of the line.
Limestone, shale. Age: Early Cretaceous, 100 to 145 million years old. About 3 mi of the line.
Black-shale, sand. Age: Late Cretaceous, 66 to 100 million years old. About 0.8 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 0.4 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 Oglesby reaches the Gulf of America by way of Pew Branch, the Leon, the Little River and the Brazos: about 480 river miles.
Lake on the way: Belton Lake.
320 miles of the trip are on the Brazos.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Oglesby; river miles along the main stem, rounded.
Oglesby has a humid subtropical climate. Summer afternoons average 97° in July; winter nights fall to about 36° in January. About 36 inches of rain fall in a normal year.
On November 14 Oglesby normally reaches 69° and falls to 46°. The record high is 91°, in 1989; the record low 21°, in 1940. The most rain on this date, 1.50 in, fell in 1954.
Normals 1991–2020 and records since 1901 from the Waco Area threaded record (Waco Regional Airport, 22 miles northeast, 350 ft lower). NOAA, through RCC-ACIS.
