The Richfield 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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86° on Nov. 17, 2016, the hottest reading for this week of the year since 1893. Next is 85° in 1930.
Richfield’s center stands about 3,390 ft above sea level. Within three miles the land runs from 3,330 ft to 3,480 ft, a difference of 150 ft: gently rolling country.
Under the town center the state geologic map shows Loess (silt), from the Pleistocene to Holocene, less than 2.6 million years old.
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 49×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Silt. Age: Pleistocene to Holocene, less than 2.6 million years old. About 19 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 5 mi of the line.
Sand, silt, clay. Age: Pleistocene to Holocene, less than 2.6 million years old. About 0.6 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 Richfield reaches the Gulf of America by way of the North Fork Cimarron, the Cimarron, the Arkansas and the Mississippi: about 1,630 river miles.
Lakes on the way: Murray Lake and Ozark Lake.
600 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Richfield; river miles along the main stem, rounded.
Richfield has a cold semi-arid climate. Summer afternoons average 95° in July; winter nights fall to about 19° in January. A normal year brings about 18 inches of snow; with the rain, that comes to about 18 inches of water.
On November 14 Richfield normally reaches 60° and falls to 28°. The record high is 85°, in 1930; the record low −6°, in 1916. The most rain on this date, 0.27 in, fell in 1926.
Normals 1991–2020 and records since 1893 at Richfield, here. NOAA, through RCC-ACIS.
