The Cockrell 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.
89° on Nov. 14, 1989, the hottest reading for this week of the year since 1913. Next is 88° in 2025.
Cockrell Hill’s center stands about 640 ft above sea level. Within three miles the land runs from 420 ft to 690 ft, a difference of 270 ft: rolling country. The highest named summit within 15 miles is Inspiration Point, about 870 ft, 13 miles south-southwest.
Under the town center the state geologic map shows Austin Chalk (marlstone, chalk), from the Late Cretaceous, 66 to 100 million years old.
The section below crosses 4 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, chalk. Age: Late Cretaceous, 66 to 100 million years old. About 19 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 3 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 2 mi of the line.
Black-shale, siltstone. Age: Late Cretaceous, 66 to 100 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 Cockrell Hill reaches Galveston Bay and the Gulf of America by way of Coombs Creek and the Trinity: about 450 river miles.
Lake on the way: Woodlands Golf Course Lake.
260 miles of the trip are on the Trinity.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Cockrell Hill; river miles along the main stem, rounded.
Cockrell Hill has a humid subtropical climate. Summer afternoons average 97° in July; winter nights fall to about 38° in January. About 38 inches of rain fall in a normal year, with about 2 inches of snow.
On November 14 Cockrell Hill normally reaches 68° and falls to 48°. The record high is 89°, in 1989; the record low 21°, in 1940. The most rain on this date, 2.05 in, fell in 1994.
Normals 1991–2020 and records since 1913 from the Dallas Area threaded record (Dallas Faa Airport, 8 miles north-northeast, 160 ft lower). NOAA, through RCC-ACIS.