The Brownsville 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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7° on Nov. 13, 2019, the coldest reading for this week of the year since 1968. Next is 10° in 1986.
Brownsville’s center stands about 800 ft above sea level. Within three miles the land runs from 770 ft to 1,060 ft, a difference of 290 ft: rolling country. The highest named summit within 15 miles is Battle Point, about 1,070 ft, 14 miles south.
Under the town center the state geologic map shows Dillsboro Formation (limestone, shale), from the Ordovician, 445 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 55×. 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, shale. Age: Ordovician, 445 to 487 million years old. About 15 mi of the line.
Limestone, shale. Age: Ordovician, 445 to 487 million years old. About 5 mi of the line.
Limestone. Age: Silurian, 422 to 445 million years old. About 5 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 Brownsville reaches the Gulf of America by way of the East Fork Whitewater, the Whitewater, the Great Miami, the Ohio and the Mississippi: about 1,510 river miles.
Lake on the way: Brookville Lake.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Brownsville; river miles along the main stem, rounded.
Brownsville has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 20° in January. About 43 inches of rain fall in a normal year.
On November 14 Brownsville normally reaches 52° and falls to 33°. The record high is 74°, in 1971; the record low 10°, in 1986. The most rain on this date, 2.00 in, fell in 1993.
Normals 1991–2020 and records since 1968 at Richmond Water Works, 15 miles north-northeast, 200 ft higher. NOAA, through RCC-ACIS.
