The Wellman 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.
89° on Nov. 16, 2025, the hottest reading for this week of the year since 1953. Next is 86° in 1973.
Wellman’s center stands about 3,350 ft above sea level. Within three miles the land runs from 3,280 ft to 3,370 ft, a difference of 90 ft: gently rolling country.
Under the town center the state geologic map shows Sand sheet deposits, from the Holocene, less than 12,000 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 57×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sand. Age: Pleistocene, less than 2.6 million years old. About 12 mi of the line.
Sand. Age: Holocene, less than 12,000 years old. About 10 mi of the line.
Sand. Age: Late Miocene to Pliocene, 2.6 to 12 million years old. About 1 mi of the line.
Sand. Age: Holocene, less than 12,000 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 Wellman reaches the Gulf of America by way of Beals Creek and the Colorado: about 910 river miles.
Lakes on the way: Buchanan Lake, Lake Marble Falls, E V Spence Reservoir 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 Wellman; river miles along the main stem, rounded.
Wellman has a cold semi-arid climate. Summer afternoons average 94° in July; winter nights fall to about 27° in January. A normal year brings about 5 inches of snow; with the rain, that comes to about 18 inches of water.
On November 14 Wellman normally reaches 65° and falls to 36°. The record high is 86°, in 2025; the record low 7°, in 1976. The most rain on this date, 0.93 in, fell in 1958.
Normals 1991–2020 and records since 1953 at Brownfield, 14 miles northeast. NOAA, through RCC-ACIS.