The Powell 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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10° on Nov. 13, 2019, the coldest reading for this week of the year since 1896. Next is 13° in 1957.
Powell’s center stands about 920 ft above sea level. Within three miles the land runs from 780 ft to 970 ft, a difference of 190 ft: gently rolling country.
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. Age: Devonian, 359 to 422 million years old. About 11 mi of the line.
Shale, black-shale. Age: Devonian, 359 to 422 million years old. About 9 mi of the line.
Limestone. Age: Devonian, 359 to 422 million years old. About 5 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 Powell reaches the Gulf of America by way of Bartholomew Run, the Olentangy, the Scioto, the Ohio and the Mississippi: about 1,740 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 Powell; river miles along the main stem, rounded.
Powell has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 22° in January. A normal year brings about 19 inches of snow; with the rain, that comes to about 42 inches of water.
On November 14 Powell normally reaches 54° and falls to 35°. The record high is 70°, in 2011; the record low 13°, in 1986. The most rain on this date, 1.60 in, fell in 1897.
Normals 1991–2020 and records since 1896 at Westerville, 7 miles east-southeast, 120 ft lower. NOAA, through RCC-ACIS.
