The San Saba 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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18° on Nov. 17, 2014, the coldest reading for this week of the year since 1923. Next is 20° in 2019.
San Saba’s center stands about 1,210 ft above sea level. Within three miles the land runs from 1,180 ft to 1,470 ft, a difference of 290 ft: rolling country. The highest named summit within 15 miles is High Pond Mountain, about 1,770 ft, 11 miles south-southwest.
The section below crosses 8 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 33×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Claystone. Age: Carboniferous, 299 to 324 million years old. About 7 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 4 mi of the line.
Limestone. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Dolostone, limestone. Age: Early Ordovician, 471 to 487 million years old. About 3 mi of the line.
Dolostone, limestone. Age: Early Ordovician, 471 to 487 million years old. About 3 mi of the line.
Limestone, dolostone. Age: Cambrian to Early Ordovician, 471 to 497 million years old. About 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. 2 smaller units along the line are not listed.
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 San Saba reaches the Gulf of America by way of the San Saba and the Colorado: about 480 river miles.
Lakes on the way: Buchanan Lake, Lake Marble Falls and Lake Lyndon B Johnson.
320 miles of the trip are on the Colorado.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of San Saba; river miles along the main stem, rounded.
San Saba has a humid subtropical climate. Summer afternoons average 93° in July; winter nights fall to about 33° in January. About 30 inches of rain fall in a normal year.
On November 14 San Saba normally reaches 67° and falls to 44°. The record high is 86°, in 1989; the record low 22°, in 2018. The most rain on this date, 3.11 in, fell in 1954.
Normals 1991–2020 and records since 1923 at Goldthwaite 1 WSW, 18 miles north-northeast, 300 ft higher. NOAA, through RCC-ACIS.
