The Richwood 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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69° on Nov. 11, 2005, the hottest reading for this week of the year since 1895. Next is 68° in 2001.
Richwood’s center stands about 1,430 ft above sea level. Within three miles the land runs from 1,350 ft to 1,520 ft, a difference of 170 ft: gently rolling country. The highest named summit within 15 miles is Detroit Mountain, about 1,630 ft, 8 miles south-southeast.
Under the town center the state geologic map shows Granitic intrusion, from the Neoarchean, 2.5 to 2.8 billion years old.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 51×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Granitic. Age: Neoarchean, 2.5 to 2.8 billion years old. About 24 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 Richwood reaches Hudson Bay by way of Campbell Creek, the Pelican, the Otter Tail, the Red River of the North and the Nelson: about 1,320 river miles. Past the border it runs north through Canada to Hudson Bay.
Lakes on the way: Lake Lizzie, Fish Lake, Detroit Lake and Lake Winnipeg.
550 miles of the trip are on the Red River of the North.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Richwood; river miles along the main stem, rounded.
Richwood has a warm-summer humid continental climate. Summer afternoons average 79° in July; winter nights fall to about −4° in January. A normal year brings about 48 inches of snow; with the rain, that comes to about 30 inches of water.
On November 14 Richwood normally reaches 38° and falls to 20°. The record high is 63°, in 1953; the record low −11°, in 1940. The most rain on this date, 0.65 in, fell in 1951.
Normals 1991–2020 and records since 1895 at Detroit Lakes 1 NNE, 6 miles south-southeast. NOAA, through RCC-ACIS.
