The Dennison 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 cloudy
Mostly cloudy; warmer
Partly cloudy
Sunny
Sunny
Partly cloudy
Mostly sunny
77° on Nov. 11, 2020, the hottest reading for this week of the year since 1909. Next is 75° in 1909.
Dennison’s center stands about 880 ft above sea level. Within three miles the land runs from 840 ft to 1,200 ft, a difference of 360 ft: rolling country. The highest named summit within 15 miles is Elephant Knob, about 1,250 ft, 11 miles west-southwest.
Under the town center the state geologic map shows Allegheny and Pottsville Groups, Undivided (shale, siltstone), from the Carboniferous, 299 to 324 million 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 43×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale, siltstone. Age: Carboniferous, 299 to 324 million years old. About 15 mi of the line.
Shale, siltstone, mudstone. Age: Carboniferous, 299 to 324 million years old. About 10 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 Dennison reaches the Gulf of America by way of Little Stillwater Creek, Stillwater Creek, the Tuscarawas, the Muskingum, the Ohio and the Mississippi: about 1,940 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 Dennison; river miles along the main stem, rounded.
Dennison has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 20° in January. About 42 inches of rain fall in a normal year.
On November 14 Dennison normally reaches 52° and falls to 32°. The record high is 75°, in 1909; the record low 11°, in 1920. The most rain on this date, 1.05 in, fell in 2011.
Normals 1991–2020 and records since 1909 at Dennison Water Works, here. NOAA, through RCC-ACIS.
