The De Borgia 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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74° on Nov. 12, 1999, the hottest reading for this week of the year since 1956. Next is 62° in 1976.
De Borgia’s center stands about 3,050 ft above sea level. Within three miles the land runs from 3,000 ft to 5,360 ft, a difference of 2,360 ft: mountain country. The highest named summit within 15 miles is Cherry Peak, about 7,340 ft, 11 miles northeast.
Under the town center the state geologic map shows Sediment or sedimentary rock, from the Tertiary, 2.6 to 66 million years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 5×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Quartzite, argillite, metasiltstone. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 17 mi of the line.
Quartzite, metasiltstone, argillite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 4 mi of the line.
Metasiltstone, quartzite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 3 mi of the line.
Sedimentary. Age: Tertiary, 2.6 to 66 million years old. About 0.4 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 De Borgia reaches the Pacific Ocean by way of the Saint Regis, the Clark Fork, the Pend Oreille and the Columbia: about 1,000 river miles.
Lakes on the way: Lake Pend Oreille, Lake Umatilla and Noxon Rapids Reservoir.
460 miles of the trip are on the Columbia.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of De Borgia; river miles along the main stem, rounded.
De Borgia has a warm-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 24° in January. A normal year brings about 15 inches of snow; with the rain, that comes to about 22 inches of water.
On November 14 De Borgia normally reaches 42° and falls to 30°. The record high is 60°, in 1999; the record low 5°, in 1959. The most rain on this date, 0.49 in, fell in 2021.
Normals 1991–2020 and records since 1956 at Thompson Falls Ph, 15 miles north, 670 ft lower. NOAA, through RCC-ACIS.
