The Maywood Park 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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71° on Nov. 13, 1999, the hottest reading for this week of the year since 1940. Next is 68° in 1976.
Maywood Park’s center stands about 160 ft above sea level. Within three miles the land runs from 0 ft to 390 ft, a difference of 390 ft: rolling country. The highest named summit within 15 miles is Livingston Mountain, about 1,980 ft, 13 miles northeast.
The section below crosses 11 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 12×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Clay, silt, sand. Age: Pleistocene, less than 2.6 million years old. About 4 mi of the line.
Conglomerate. Age: Pliocene, 2.6 to 5.3 million years old. About 3 mi of the line.
Sandstone, clay, volcanic. Age: Pleistocene, less than 2.6 million years old. About 3 mi of the line.
Basaltic-andesite, basalt. Age: Early Pliocene to Pleistocene, 1.2 to 3.9 million years old. About 3 mi of the line.
Sand, gravel, silt. Age: Holocene, less than 12,000 years old. About 3 mi of the line.
Silt, sand, gravel. Age: Pleistocene, less than 2.6 million years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 5 smaller units 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 Maywood Park reaches the Pacific Ocean by way of Columbia Slough and the Columbia: about 110 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Maywood Park; river miles along the main stem, rounded.
Maywood Park has a warm-summer Mediterranean climate. Summer afternoons average 82° in July; winter nights fall to about 36° in January. About 37 inches of rain fall in a normal year, with about 4 inches of snow.
On November 14 Maywood Park normally reaches 54° and falls to 41°. The record high is 67°, in 2001; the record low 15°, in 1955. The most rain on this date, 1.28 in, fell in 1948.
Normals 1991–2020 and records since 1940 from the Portland Area threaded record (Portland International Airport, 4 miles northwest, 140 ft lower). NOAA, through RCC-ACIS.
