The Harveyville 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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81° on Nov. 12, 1989, the hottest reading for this week of the year since 1897. Next is 79° in 1949.
Harveyville’s center stands about 1,160 ft above sea level. Within three miles the land runs from 1,090 ft to 1,240 ft, a difference of 150 ft: gently rolling country. The highest named summit within 15 miles is Gun Barrel Hill, about 1,590 ft, 13 miles west.
The section below crosses 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 40×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale. Age: Carboniferous, 299 to 324 million years old. About 11 mi of the line.
Sand, silt, clay. Age: Pleistocene to Holocene, less than 2.6 million years old. About 5 mi of the line.
Shale. Age: Carboniferous, 299 to 324 million years old. About 3 mi of the line.
Limestone, shale. Age: Permian, 252 to 299 million years old. About 3 mi of the line.
Shale, limestone. Age: Permian, 252 to 299 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 Harveyville reaches the Gulf of America by way of Dragoon Creek, Hundred and Ten Mile Creek, the Marais des Cygnes, the Osage, the Missouri and the Mississippi: about 1,780 river miles.
Lake on the way: Pomona Lake.
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 Harveyville; river miles along the main stem, rounded.
Harveyville has a hot-summer humid continental climate. Summer afternoons average 89° in July; winter nights fall to about 18° in January. A normal year brings about 18 inches of snow; with the rain, that comes to about 37 inches of water.
On November 14 Harveyville normally reaches 54° and falls to 32°. The record high is 76°, in 1990; the record low 1°, in 1940. The most rain on this date, 3.41 in, fell in 1931.
Normals 1991–2020 and records since 1897 at Eskridge, 9 miles west-northwest, 250 ft higher. NOAA, through RCC-ACIS.
