The Brockway 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.
Mostly sunny
Mostly sunny
Partly cloudy
Mostly cloudy
Chance of showers; cooler
Mostly cloudy
Chance of showers
−22° on Nov. 14, 2014, the coldest reading for this week of the year since 1959. Next is −21° in 1966.
Brockway’s center stands about 2,580 ft above sea level. Within three miles the land runs from 2,530 ft to 2,770 ft, a difference of 240 ft: rolling country.
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 40×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, shale. Age: Early Paleocene to Middle Paleocene, 59 to 66 million years old. About 23 mi of the line.
Gravel, sand, silt. Age: Pleistocene to Holocene, less than 1.8 million years old. About 0.7 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 Brockway reaches the Gulf of America by way of the Redwater, the Missouri and the Mississippi: about 2,970 river miles.
Lakes on the way: Lake Oahe, Lake Sakakawea, Lake Sharpe and Lake Francis Case.
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 Brockway; river miles along the main stem, rounded.
Brockway has a cold semi-arid climate. Summer afternoons average 85° in July; winter nights fall to about 7° in January. About 12 inches of rain fall in a normal year.
On November 14 Brockway normally reaches 43° and falls to 20°. The record high is 71°, in 1999; the record low −22°, in 2014. The most rain on this date, 0.17 in, fell in 1995.
Normals 1991–2020 and records since 1959 at Brockway 3 WSW, 3 miles west-southwest. NOAA, through RCC-ACIS.
