The Newdale 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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−16° on Nov. 16, 1955, the coldest reading for this week of the year since 1895. Next is −12° in 2014.
Newdale’s center stands about 5,090 ft above sea level. Within three miles the land runs from 4,950 ft to 5,390 ft, a difference of 440 ft: hilly country. The highest named summit within 15 miles is Grandview Point, about 7,640 ft, 14 miles east-southeast.
Under the town center the state geologic map shows Basalt (Pleistocene and Pliocene), from the Late Pliocene to Pleistocene, less than 3 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 11×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gravel, sand, silt. Age: Quaternary, less than 2.6 million years old. About 10 mi of the line.
Rhyolite. Age: Pleistocene, 0.6 to 2 million years old. About 8 mi of the line.
Basalt. Age: Late Pliocene to Pleistocene, less than 3 million 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 Newdale reaches the Pacific Ocean by way of the Teton, the Henrys Fork, the Snake and the Columbia: about 1,190 river miles.
Lakes on the way: American Falls Reservoir, Lake Umatilla, Brownlee Reservoir and Cove Arm Lake.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Newdale; river miles along the main stem, rounded.
Newdale has a warm-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 12° in January. About 15 inches of rain fall in a normal year.
On November 14 Newdale normally reaches 42° and falls to 22°. The record high is 63°, in 1999; the record low −5°, in 1978. The most rain on this date, 0.56 in, fell in 1991.
Normals 1991–2020 and records since 1895 at Saint Anthony, 6 miles northwest, 120 ft lower. NOAA, through RCC-ACIS.
