The Edgewater 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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−8° on Nov. 13, 2014, the coldest reading for this week of the year since 1981. Next is 1° in 1997.
Edgewater’s center stands about 5,370 ft above sea level. Within three miles the land runs from 5,190 ft to 5,600 ft, a difference of 410 ft: hilly country. The highest named summit within 15 miles is Bear Mountain, about 8,610 ft, 15 miles southwest.
Under the town center the state geologic map shows Denver and Arapahoe Fms (sandstone, mudstone, conglomerate), from the Late Cretaceous to Paleocene, 56 to 100 million years old.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 7×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, mudstone, conglomerate. 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 5 mi of the line.
Gneiss. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 4 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 2 mi of the line.
Sandstone, shale, claystone. Age: Late Cretaceous, 66 to 100 million years old. About 0.9 mi of the line.
Gravel, unconsolidated. Age: Pleistocene, less than 0.5 million years old. About 0.8 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit along the line are not listed.
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 Edgewater reaches the Gulf of America by way of the South Platte, the Platte, the Missouri and the Mississippi: about 2,400 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 Edgewater; river miles along the main stem, rounded.
Edgewater has a hot-summer humid continental climate. Summer afternoons average 88° in July; winter nights fall to about 17° in January. A normal year brings about 76 inches of snow; with the rain, that comes to about 17 inches of water.
On November 14 Edgewater normally reaches 56° and falls to 24°. The record high is 82°, in 1990; the record low −5°, in 2014. The most rain on this date, 0.82 in, fell in 1987.
Normals 1991–2020 and records since 1981 at Wheat Ridge 2, 3 miles west-northwest. NOAA, through RCC-ACIS.
