The Colorado Acres 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.
24° on Nov. 15, 1908, the coldest reading for this week of the year since 1902. Next is 29° in 1920.
Colorado Acres’s center stands about 570 ft above sea level. Within three miles the land runs from 540 ft to 650 ft, a difference of 110 ft: gently rolling country.
The section below crosses 5 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.
Clay. Age: Late Eocene to Early Oligocene, 28 to 38 million years old. About 9 mi of the line.
Claystone, sandstone. Age: Eocene, 34 to 56 million years old. About 6 mi of the line.
Sandstone, claystone. Age: Eocene, 34 to 56 million years old. About 5 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 0.7 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 Colorado Acres reaches Corpus Christi Bay and the Gulf of America by way of Becerra Creek, San Casimiro Creek and the Nueces: about 220 river miles.
Lake on the way: Lake Corpus Christi.
100 miles of the trip are on the Nueces.
Often dry. About 30% of the way is mapped as streams that run only after rain or snowmelt; the water makes the whole trip in floods.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Colorado Acres; river miles along the main stem, rounded.
Colorado Acres has a hot semi-arid climate. Summer afternoons average 101° in August; winter nights fall to about 47° in January. About 21 inches of rain fall in a normal year.
On November 14 Colorado Acres normally reaches 77° and falls to 56°. The record high is 96°, in 1903; the record low 28°, in 1908. The most rain on this date, 0.46 in, fell in 1920.
Normals 1991–2020 and records since 1902 from the Laredo Area threaded record (Laredo International Airport, 17 miles west-southwest). NOAA, through RCC-ACIS.