The New Meadows 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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−24° on Nov. 16, 1955, the coldest reading for this week of the year since 1905. Next is −16° in 1915.
New Meadows’s center stands about 3,870 ft above sea level. Within three miles the land runs from 3,830 ft to 4,700 ft, a difference of 870 ft: hilly country. The highest named summit within 15 miles is Granite Mountain, about 8,470 ft, 9 miles north-northeast.
Under the town center the state geologic map shows Glacial deposits (coarse-detrital, fine-detrital), from the Pleistocene, less than 2.6 million years old.
The section below crosses 7 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, basaltic-andesite. Age: Early Miocene to Late Miocene, 6 to 18 million years old. About 14 mi of the line.
Granodiorite, tonalite, quartz-diorite. Age: Late Jurassic to Late Cretaceous, 87 to 160 million years old. About 4 mi of the line.
Tonalite, trondhjemite. Age: Early Cretaceous, 110 to 120 million years old. About 2 mi of the line.
Gravel, sand, silt. Age: Quaternary, less than 2.6 million years old. About 1 mi of the line.
Coarse-detrital, fine-detrital. Age: Pleistocene, less than 2.6 million years old. About 1 mi of the line.
Gravel. Age: Quaternary, less than 2.6 million years old. About 0.9 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit along the line are not listed.
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 New Meadows reaches the Pacific Ocean by way of the Little Salmon, the Salmon, the Snake and the Columbia: about 630 river miles.
Lake on the way: Lake Umatilla.
210 miles of the trip are on the Columbia.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of New Meadows; river miles along the main stem, rounded.
New Meadows has a dry-summer warm-summer continental climate. Summer afternoons average 85° in July; winter nights fall to about 9° in January. About 24 inches of rain fall in a normal year.
On November 14 New Meadows normally reaches 42° and falls to 20°. The record high is 66°, in 2016; the record low −2°, in 2000. The most rain on this date, 1.07 in, fell in 1988.
Normals 1991–2020 and records since 1905 at New Meadows Rs, here. NOAA, through RCC-ACIS.
