The Three Rivers 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.
Partly cloudy
Chance of showers; warmer
Chance of showers; cooler
Partly cloudy
Mostly cloudy; warmer
Partly cloudy
Partly cloudy
29° on Nov. 14, 2018, the coldest reading for this week of the year since 1983. Next is 32° in 2019.
Three Rivers’s center stands about 150 ft above sea level. Within three miles the land runs from 130 ft to 240 ft, a difference of 110 ft: gently rolling country. The highest named summit within 15 miles is Opossum Hill, about 380 ft, 15 miles west-northwest.
Under the town center the state geologic map shows Terrace deposits (sand), from the Pleistocene to Holocene, less than 2.6 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 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.
Mudstone, sand. Age: Oligocene, 23 to 34 million years old. About 13 mi of the line.
Sandstone, clay. Age: Miocene, 5.3 to 23 million years old. About 8 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 2 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 0.5 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 Three Rivers reaches Corpus Christi Bay and the Gulf of America by way of Olds Slough and the Nueces: about 100 river miles.
Lake on the way: Lake Corpus Christi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Three Rivers; river miles along the main stem, rounded.
Three Rivers has a humid subtropical climate. Summer afternoons average 97° in August; winter nights fall to about 43° in January. About 26 inches of rain fall in a normal year.
On November 14 Three Rivers normally reaches 74° and falls to 52°. The record high is 93°, in 1993; the record low 29°, in 2018. The most rain on this date, 1.48 in, fell in 1998.
Normals 1991–2020 and records since 1983 at Choke Canyon Dam, 4 miles west. NOAA, through RCC-ACIS.
