The Manning 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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−19° on Nov. 14, 2014, the coldest reading for this week of the year since 1981. Next is −13° in 2022.
Manning’s center stands about 2,220 ft above sea level. Within three miles the land runs from 2,140 ft to 2,440 ft, a difference of 300 ft: rolling country. The highest named summit within 15 miles is Hungry Man Butte, about 2,570 ft, 13 miles west.
Under the town center the state geologic map shows Sentinel Butte Formation (siltstone, claystone, sandstone), from the Paleocene, 56 to 66 million years old.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 34×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Siltstone, claystone, sandstone. Age: Paleocene, 56 to 66 million 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 Manning reaches the Gulf of America by way of the Knife, the Missouri and the Mississippi: about 2,710 river miles.
Lakes on the way: Lake Oahe, Lake Sharpe, Lake Francis Case and Lewis and Clark 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 Manning; river miles along the main stem, rounded.
Manning has a warm-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 4° in January. A normal year brings about 44 inches of snow; with the rain, that comes to about 18 inches of water.
On November 14 Manning normally reaches 40° and falls to 20°. The record high is 66°, in 2001; the record low −19°, in 2014. The most rain on this date, 0.39 in, fell in 2002.
Normals 1991–2020 and records since 1981 at Dickinson Ranch Headquarters, 4 miles southwest, 160 ft higher. NOAA, through RCC-ACIS.
