The Spring Branch 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.
Chance of showers
Showers likely
Mostly cloudy; cooler
Mostly sunny
Mostly cloudy
Chance of showers
Partly cloudy
3.95 inches of rain fell in two days, the most for this week of the year since records began in 1961. The next wettest, 3.67 inches, fell in 2004.
Spring Branch’s center stands about 1,110 ft above sea level. Within three miles the land runs from 990 ft to 1,270 ft, a difference of 280 ft: rolling country. The highest named summit within 15 miles is Twin Sisters, about 1,740 ft, 6 miles north-northwest.
Under the town center the state geologic map shows Hensell Sand (limestone), from the Early Cretaceous, 100 to 145 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 25×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Limestone, marlstone. Age: Early Cretaceous, 100 to 145 million years old. About 19 mi of the line.
Limestone. Age: Early Cretaceous, 100 to 113 million years old. About 3 mi of the line.
Limestone. Age: Early Cretaceous, 100 to 145 million years old. About 2 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 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 Spring Branch reaches the Gulf of America by way of Cypress Creek, the Guadalupe and the South Guadalupe: about 330 river miles.
Lake on the way: Canyon Lake.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Spring Branch; river miles along the main stem, rounded.
Spring Branch has a humid subtropical climate. Summer afternoons average 95° in August; winter nights fall to about 40° in January. About 38 inches of rain fall in a normal year.
On November 14 Spring Branch normally reaches 70° and falls to 50°. The record high is 86°, in 2011; the record low 27°, in 2018. The most rain on this date, 0.60 in, fell in 2004.
Normals 1991–2020 and records since 1961 at Canyon Dam, 14 miles east, 110 ft lower. NOAA, through RCC-ACIS.
