The Ozark Acres 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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11° on Nov. 13, 2019, the coldest reading for this week of the year since 1897. Next is 12° in 1916.
Ozark Acres’s center stands about 690 ft above sea level. Within three miles the land runs from 330 ft to 780 ft, a difference of 450 ft: hilly country.
Under the town center the state geologic map shows Cotter and Jefferson City Dolomites (dolostone), from the Early Ordovician, 471 to 487 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 33×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 19 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 5 mi of the line.
Sandstone, dolostone. Age: Middle Ordovician, 459 to 471 million years old. About 0.1 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 Ozark Acres reaches the Gulf of America by way of Humphrey Creek, the Spring, the Black River, the White River and the Mississippi: about 980 river miles.
620 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Ozark Acres; river miles along the main stem, rounded.
Ozark Acres has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 26° in January. A normal year brings about 7 inches of snow; with the rain, that comes to about 51 inches of water.
On November 14 Ozark Acres normally reaches 59° and falls to 38°. The record high is 78°, in 1999; the record low 11°, in 2019. The most rain on this date, 0.85 in, fell in 1915.
Normals 1991–2020 and records since 1897 at Hardy, 7 miles west-southwest, 290 ft lower. NOAA, through RCC-ACIS.
