The Biggsville 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.
Sunny
Partly cloudy; warmer
Mostly sunny
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76° on Nov. 11, 2022, the hottest reading for this week of the year since 1938. Next is 75° in 1999.
Biggsville’s center stands about 680 ft above sea level. Within three miles the land runs from 610 ft to 720 ft, a difference of 110 ft: gently rolling country.
Under the town center the state geologic map shows Meppen Limestone, Fern Glen Formation, and Burlington-Keokuk Limestone, from the Early Mississippian to Middle Mississippian, 331 to 359 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Limestone. Age: Early Mississippian to Middle Mississippian, 331 to 359 million years old. About 19 mi of the line.
Shale. Age: Middle Devonian to Late Devonian, 359 to 388 million years old. About 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 Biggsville reaches the Gulf of America by way of South Henderson Creek, Henderson Creek and the Mississippi: about 1,390 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Biggsville; river miles along the main stem, rounded.
Biggsville has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 16° in January. A normal year brings about 17 inches of snow; with the rain, that comes to about 37 inches of water.
On November 14 Biggsville normally reaches 51° and falls to 33°. The record high is 75°, in 1999; the record low 7°, in 1940. The most rain on this date, 0.77 in, fell in 1972.
Normals 1991–2020 and records since 1938 at Gladstone L/D 18, 9 miles west-northwest, 140 ft lower. NOAA, through RCC-ACIS.
