The Draper 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
Sunny; warmer
Mostly sunny
Partly cloudy
Partly cloudy
Partly cloudy
Showers likely
−21° on Nov. 14, 1959, the coldest reading for this week of the year since 1907. Next is −13° in 1940.
Draper’s center stands about 2,240 ft above sea level. Within three miles the land runs from 2,130 ft to 2,350 ft, a difference of 220 ft: rolling country. The highest named summit within 15 miles is White Clay Butte, about 2,500 ft, 7 miles west.
Under the town center the state geologic map shows Pierre Shale (shale, bentonite), from the Late Cretaceous, 66 to 100 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 38×. 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, bentonite. Age: Late Cretaceous, 66 to 100 million years old. About 23 mi of the line.
Coarse-detrital, fine-detrital. Age: Quaternary, less than 2.6 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 Draper reaches the Gulf of America by way of Medicine Creek, the Missouri and the Mississippi: about 2,290 river miles.
Lakes on the way: Lake Sharpe, Lake Francis Case and Lewis and Clark Lake.
1,170 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Draper; river miles along the main stem, rounded.
Draper has a hot-summer humid continental climate. Summer afternoons average 87° in July; winter nights fall to about 12° in January. A normal year brings about 49 inches of snow; with the rain, that comes to about 22 inches of water.
On November 14 Draper normally reaches 46° and falls to 25°. The record high is 75°, in 1975; the record low −21°, in 1959. The most rain on this date, 0.40 in, fell in 1956.
Normals 1991–2020 and records since 1907 at Murdo, 9 miles west-southwest. NOAA, through RCC-ACIS.
