The Anson 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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91° on Nov. 16, 2025, the hottest reading for this week of the year since 1898. Next is 88° in 2021.
Anson’s center stands about 1,730 ft above sea level. Within three miles the land runs from 1,650 ft to 1,810 ft, a difference of 160 ft: gently rolling country. The highest named summit within 15 miles is Skinout Mountain, about 1,920 ft, 9 miles west.
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 58×. 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: Permian, 252 to 299 million years old. About 19 mi of the line.
Sandstone-mudstone. Age: Permian, 252 to 299 million years old. About 2 mi of the line.
Conglomerate. Age: Pleistocene, less than 2.6 million years old. About 2 mi of the line.
Coarse-detrital, fine-detrital. Age: Quaternary, less than 2.6 million years old. About 2 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 Anson reaches the Gulf of America by way of Carter Creek, Harmony Creek, Redmud Creek, California Creek, Paint Creek, the Clear Fork and the Brazos: about 930 river miles.
Lakes on the way: Possum Kingdom Lake and Lake Granbury.
550 miles of the trip are on the Brazos.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Anson; river miles along the main stem, rounded.
Anson has a humid subtropical climate. Summer afternoons average 96° in July; winter nights fall to about 29° in January. About 25 inches of rain fall in a normal year, with about 4 inches of snow.
On November 14 Anson normally reaches 67° and falls to 40°. The record high is 85°, in 1989; the record low 14°, in 1976. The most rain on this date, 0.37 in, fell in 2004.
Normals 1991–2020 and records since 1898 at Anson, here. NOAA, through RCC-ACIS.
