The Strasburg 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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80° on Nov. 16, 2016, the hottest reading for this week of the year since 1872. Next is 79° in 1990.
Strasburg’s center stands about 5,380 ft above sea level. Within three miles the land runs from 5,210 ft to 5,500 ft, a difference of 290 ft: rolling country.
Under the town center the state geologic map shows Modern alluvium (unconsolidated), from the Quaternary, less than 2.6 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 21×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 9 mi of the line.
Sand, silt. Age: Quaternary, less than 2.6 million years old. About 8 mi of the line.
Arkose, shale, mudstone. Age: Late Cretaceous to Paleocene, 56 to 100 million years old. About 6 mi of the line.
Arkose, conglomerate, shale. Age: Paleocene to Eocene, 34 to 66 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 Strasburg reaches the Gulf of America by way of Little Comanche Creek, Comanche Creek, Kiowa Creek, the South Platte, the Platte, the Missouri and the Mississippi: about 2,390 river miles.
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 Strasburg; river miles along the main stem, rounded.
Strasburg has a cold semi-arid climate. Summer afternoons average 90° in July; winter nights fall to about 19° in January. About 14 inches of rain fall in a normal year.
On November 14 Strasburg normally reaches 54° and falls to 27°. The record high is 79°, in 1990; the record low −7°, in 1872. The most rain on this date, 0.60 in, fell in 1994.
Normals 1991–2020 and records since 1872 from the Denver Area threaded record (Denver International Airport, 19 miles west-northwest). NOAA, through RCC-ACIS.
