The Catahoula 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
Showers likely
Mostly sunny; warmer
Mostly sunny
Partly cloudy
Mostly sunny
8.02 inches of rain fell in two days, the most for this week of the year since records began in 1893. The next wettest, 5.17 inches, fell in 2000.
Catahoula’s center stands about 15 ft above sea level. Within three miles the land runs from 0 ft to 80 ft, a difference of 80 ft: gently rolling country.
Under the town center the state geologic map shows Natural Levees (silt, clay), from the Holocene, less than 12,000 years old.
The section below crosses 2 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.
Clay. Age: Holocene, less than 12,000 years old. About 13 mi of the line.
Silt, clay. Age: Holocene, less than 12,000 years old. About 7 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 Catahoula reaches the Gulf of America by way of Dauterive Lake, the Bayou Teche and the Lower Atchafalaya: about 95 river miles.
Lake on the way: Dauterive Lake.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Catahoula; river miles along the main stem, rounded.
Catahoula has a humid subtropical climate. Summer afternoons average 92° in August; winter nights fall to about 43° in January. About 63 inches of rain fall in a normal year.
On November 14 Catahoula normally reaches 72° and falls to 50°. The record high is 87°, in 1951; the record low 29°, in 1911. The most rain on this date, 3.22 in, fell in 1989.
Normals 1991–2020 and records since 1893 at Lafayette Regional Airport, 17 miles west. NOAA, through RCC-ACIS.
