The Ben Lomond 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.
Mostly sunny
Chance of showers
Mostly sunny; warmer
Partly cloudy
Partly cloudy
Partly cloudy
Mostly sunny
4.82 inches of rain fell in two days, the most for this week of the year since records began in 1893. The next wettest, 3.95 inches, fell in 1985.
Ben Lomond’s center stands about 470 ft above sea level. Within three miles the land runs from 270 ft to 530 ft, a difference of 260 ft: rolling country.
Under the town center the state geologic map shows Brownstown Marl (marlstone, sandstone), from the Late Cretaceous, 66 to 100 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 61×. 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 6 mi of the line.
Mudstone, sandstone. Age: Late Cretaceous, 66 to 100 million years old. About 5 mi of the line.
Coarse-detrital, fine-detrital. Age: Holocene, less than 12,000 years old. About 4 mi of the line.
Marlstone, sandstone. Age: Late Cretaceous, 66 to 100 million years old. About 2 mi of the line.
Volcanic, sandstone. Age: Late Cretaceous, 66 to 100 million years old. About 2 mi of the line.
Sandstone, marlstone. Age: Early Cretaceous, 100 to 145 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 Ben Lomond reaches the Gulf of America by way of Davis Slough, the Little River, the Red River, the Atchafalaya and the Lower Atchafalaya: about 560 river miles.
390 miles of the trip are on the Red River.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Ben Lomond; river miles along the main stem, rounded.
Ben Lomond has a humid subtropical climate. Summer afternoons average 93° in July; winter nights fall to about 32° in January. About 53 inches of rain fall in a normal year, with about 2 inches of snow.
On November 14 Ben Lomond normally reaches 64° and falls to 41°. The record high is 86°, in 1955; the record low 18°, in 2019. The most rain on this date, 3.25 in, fell in 1958.
Normals 1991–2020 and records since 1893 at Ashdown 4 SSE, 15 miles south, 150 ft lower. NOAA, through RCC-ACIS.
