The Pollock 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.
Sunny
Showers likely
Showers likely
Mostly sunny
Mostly sunny
Partly cloudy
Mostly sunny
21° on Nov. 13, 2019, the coldest reading for this week of the year since 1960. Next is 23° in 1997.
Pollock’s center stands about 240 ft above sea level. Within three miles the land runs from 140 ft to 300 ft, a difference of 160 ft: gently rolling country.
Under the town center the state geologic map shows High Terraces (clay, silt, sand), from the Pleistocene, less than 2.6 million years old.
The section below crosses 7 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, silt, sand. Age: Pleistocene, less than 2.6 million years old. About 15 mi of the line.
Clay. Age: Holocene, less than 12,000 years old. About 4 mi of the line.
Clay, siltstone. Age: Miocene, 5.3 to 23 million years old. About 2 mi of the line.
Silt, clay. Age: Holocene, less than 12,000 years old. About 2 mi of the line.
Siltstone, sandstone, clay. Age: Miocene, 5.3 to 23 million years old. About 1 mi of the line.
Clay, silt. Age: Pleistocene, less than 2.6 million years old. About 0.5 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit 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 Pollock reaches the Gulf of America by way of Sandy Creek, Big Creek, the Little River, the Black River, the Red River, the Atchafalaya and the Lower Atchafalaya: about 270 river miles.
Lake on the way: Catahoula Lake.
100 miles of the trip are on the Atchafalaya.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Pollock; river miles along the main stem, rounded.
Pollock has a humid subtropical climate. Summer afternoons average 94° in August; winter nights fall to about 37° in January. About 57 inches of rain fall in a normal year.
On November 14 Pollock normally reaches 70° and falls to 43°. The record high is 82°, in 2011; the record low 24°, in 2013. The most rain on this date, 2.41 in, fell in 1993.
Normals 1991–2020 and records since 1960 at Alexandria Esler Field, 12 miles southeast, 150 ft lower. NOAA, through RCC-ACIS.
