The Collins 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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16° on Nov. 13, 2019, the coldest reading for this week of the year since 1876. Next is 19° in 1940.
Collins’s center stands about 170 ft above sea level. Within three miles the land runs from 130 ft to 230 ft, a difference of 100 ft: gently rolling country.
Under the town center the state geologic map shows Terrace deposits (coarse-detrital, fine-detrital), from the Pleistocene, less than 2.6 million 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 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.
Coarse-detrital, fine-detrital. Age: Pleistocene, less than 2.6 million years old. About 12 mi of the line.
Coarse-detrital, fine-detrital. Age: Holocene, less than 12,000 years old. About 8 mi of the line.
Coarse-detrital, fine-detrital. Age: Holocene, less than 12,000 years old. About 4 mi of the line.
Marl. Age: Late Eocene, 34 to 38 million years old. About 1 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 Collins reaches the Gulf of America by way of the Bayou Bartholomew, the Ouachita, the Black River, the Red River, the Atchafalaya and the Lower Atchafalaya: about 510 river miles.
150 miles of the trip are on the Ouachita.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Collins; river miles along the main stem, rounded.
Collins has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 34° in January. About 53 inches of rain fall in a normal year.
On November 14 Collins normally reaches 65° and falls to 43°. The record high is 87°, in 1955; the record low 20°, in 1963. The most rain on this date, 1.61 in, fell in 2005.
Normals 1991–2020 and records since 1876 at Monticello Municipal Airport, 13 miles northwest, 110 ft higher. NOAA, through RCC-ACIS.
