The Glenwood 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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69° on Nov. 14, 2025, the hottest reading for this week of the year since 1909. Next is 63° in 1969.
Glenwood’s center stands about 1,920 ft above sea level. Within three miles the land runs from 1,810 ft to 2,470 ft, a difference of 660 ft: hilly country. The highest named summit within 15 miles is South Butte, about 7,840 ft, 13 miles northwest.
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 4×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Basalt. Age: Early Pliocene to Holocene, less than 5.3 million years old. About 12 mi of the line.
Basalt. Age: Late Oligocene to Early Pliocene, 3.6 to 28 million years old. About 6 mi of the line.
Silt, sand. Age: Holocene, less than 12,000 years old. About 6 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 Glenwood reaches the Pacific Ocean by way of Bird Creek, the Klickitat and the Columbia: about 230 river miles.
180 miles of the trip are on the Columbia.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Glenwood; river miles along the main stem, rounded.
Glenwood has a cold desert climate. Summer afternoons average 84° in July; winter nights fall to about 25° in December. Barely 0.0 inches of rain fall in a normal year.
On November 14 Glenwood normally reaches 46° and falls to 30°. The record high is 69°, in 2025; the record low 3°, in 1985. The most rain on this date, 1.95 in, fell in 2001.
Normals 1991–2020 and records since 1909 at Mount Adams Rs, 12 miles west. NOAA, through RCC-ACIS.
