The Hudson 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.
Hudson’s center stands about 4,970 ft above sea level. Within three miles the land runs from 4,880 ft to 5,090 ft, a difference of 210 ft: rolling country. The highest named summit within 15 miles is Riley Mound, about 5,190 ft, 8 miles west-northwest.
Under the town center the state geologic map shows Denver Fm or lower part of Dawson Arkose (arkose, shale, mudstone), from the Late Cretaceous to Paleocene, 56 to 100 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 36×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Arkose, shale, mudstone. Age: Late Cretaceous to Paleocene, 56 to 100 million years old. About 11 mi of the line.
Sand, silt. Age: Quaternary, less than 2.6 million years old. About 9 mi of the line.
Gravel, unconsolidated. Age: Pleistocene, 0.2 to 1.6 million years old. About 3 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 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 Hudson reaches the Gulf of America by way of Box Elder Creek, the South Platte, the Platte, the Missouri and the Mississippi: about 2,350 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 Hudson; river miles along the main stem, rounded.
Hudson 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 Hudson 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, 17 miles south, 430 ft higher). NOAA, through RCC-ACIS.
