The Neilton 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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8.13 inches of rain fell in two days, the most for this week of the year since records began in 1987. The next wettest, 7.58 inches, fell in 1998.
Neilton’s center stands about 490 ft above sea level. Within three miles the land runs from 170 ft to 2,450 ft, a difference of 2,280 ft: mountain country. The highest named summit within 15 miles is Gibson Peak, about 4,400 ft, 8 miles east-northeast.
Under the town center the state geologic map shows Terrace deposits (gravel, sand), from the Pleistocene, less than 2.6 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 6×. 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. Age: Pleistocene, less than 2.6 million years old. About 13 mi of the line.
Basalt. Age: Early Paleocene to Middle Eocene, 40 to 64 million years old. About 10 mi of the line.
Graywacke, slate, argillite. Age: Eocene to Miocene, 5.3 to 56 million years old. About 1 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 Neilton reaches the Pacific Ocean by way of Hathaway Creek, Boulder Creek and the Quinault: about 30 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Neilton; river miles along the main stem, rounded.
Neilton has a oceanic climate. Summer afternoons average 70° in August; winter nights fall to about 34° in February. About 116 inches of rain fall in a normal year, with about 1 inch of snow.
On November 14 Neilton normally reaches 50° and falls to 36°. The record high is 60°, in 2001; the record low 26°, in 1993. The most rain on this date, 3.60 in, fell in 1998.
Normals 1991–2020 and records since 1987 at Humptulips Salmon Hatchery, 13 miles south-southwest, 350 ft lower. NOAA, through RCC-ACIS.
