The Chalmers 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
Partly cloudy; warmer
Mostly sunny
Partly cloudy
Mostly sunny
Mostly sunny
Mostly sunny
76° on Nov. 12, 2010, the hottest reading for this week of the year since 1901. Next is 75° in 1955.
Chalmers’s center stands about 710 ft above sea level. Within three miles the land runs from 670 ft to 730 ft, a difference of 60 ft: nearly flat ground.
Under the town center the state geologic map shows New Albany Shale (black-shale), from the Devonian to Carboniferous, 324 to 422 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.
Limestone, dolostone. Age: Silurian, 422 to 445 million years old. About 9 mi of the line.
Black-shale. Age: Devonian to Carboniferous, 324 to 422 million years old. About 7 mi of the line.
Siltstone. Age: Carboniferous, 324 to 359 million years old. About 6 mi of the line.
Limestone, dolostone. Age: Devonian, 359 to 422 million years old. About 2 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 Chalmers reaches the Gulf of America by way of Spring Creek, the Tippecanoe, the Wabash, Big Bayou, the Wabash River Old Channel, the Old Channel Wabash, the Ohio and the Mississippi: about 1,420 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Chalmers; river miles along the main stem, rounded.
Chalmers has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 16° in January. A normal year brings about 19 inches of snow; with the rain, that comes to about 40 inches of water.
On November 14 Chalmers normally reaches 50° and falls to 32°. The record high is 75°, in 1955; the record low 8°, in 1986. The most rain on this date, 1.95 in, fell in 1959.
Normals 1991–2020 and records since 1901 at West Lafayette 6 NW, 14 miles south-southwest. NOAA, through RCC-ACIS.
