The Dennis 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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Chance of showers
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Chance of showers
10° on Nov. 17, 2014, the coldest reading for this week of the year since 1996. Next is 10° in 2019.
Dennis’s center stands about 920 ft above sea level. Within three miles the land runs from 880 ft to 1,000 ft, a difference of 120 ft: gently rolling country.
Under the town center the state geologic map shows Kansas City Group (limestone, shale), from the Carboniferous, 299 to 324 million years old.
The section below crosses 3 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, shale. Age: Carboniferous, 299 to 324 million years old. About 22 mi of the line.
Shale, limestone, sandstone. Age: Carboniferous, 299 to 324 million years old. About 2 mi of the line.
Shale, sandstone. Age: Carboniferous, 299 to 324 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 Dennis reaches the Gulf of America by way of Big Hill Creek, the Verdigris, the Arkansas and the Mississippi: about 1,200 river miles.
Lakes on the way: Oologah Lake, Murray Lake and Ozark Lake.
600 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Dennis; river miles along the main stem, rounded.
Dennis has a humid subtropical climate. Summer afternoons average 91° in July; winter nights fall to about 23° in January. About 38 inches of rain fall in a normal year.
Normals 1991–2020 and records since 1996 at Parsons Tri City Airport, 5 miles west-southwest. NOAA, through RCC-ACIS.
