The Rockville 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.
Partly cloudy
Mostly sunny; warmer
Sunny
Partly cloudy
Partly cloudy
Partly cloudy
Mostly sunny
1° on Nov. 16, 1932, the coldest reading for this week of the year since 1890. Next is 1° in 1940.
Rockville’s center stands about 770 ft above sea level. Within three miles the land runs from 720 ft to 820 ft, a difference of 100 ft: gently rolling country. The highest named summit within 15 miles is Reader Hill, about 960 ft, 14 miles east-southeast.
Under the town center the state geologic map shows Riverton Formation, Burgner Formation (shale, siltstone, mudstone), from the Carboniferous, 299 to 324 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 62×. 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, siltstone, mudstone. Age: Carboniferous, 299 to 324 million years old. About 9 mi of the line.
Shale, sandstone, siltstone. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Limestone, shale. Age: Carboniferous, 299 to 324 million years old. About 3 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 3 mi of the line.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 2 mi of the line.
Limestone, siltstone. Age: Carboniferous, 324 to 359 million years old. About 2 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 Rockville reaches the Gulf of America by way of Panther Creek, the Osage, the Missouri and the Mississippi: about 1,550 river miles.
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 Rockville; river miles along the main stem, rounded.
Rockville has a hot-summer humid continental climate. Summer afternoons average 88° in July; winter nights fall to about 21° in January. A normal year brings about 10 inches of snow; with the rain, that comes to about 44 inches of water.
On November 14 Rockville normally reaches 56° and falls to 35°. The record high is 81°, in 1999; the record low 10°, in 1916. The most rain on this date, 1.26 in, fell in 1993.
Normals 1991–2020 and records since 1890 at Appleton City, 9 miles north-northeast. NOAA, through RCC-ACIS.
