The Blodgett 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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17° on Nov. 16, 2014, the coldest reading for this week of the year since 1936. Next is 19° in 1978.
Blodgett’s center stands about 680 ft above sea level. Within three miles the land runs from 570 ft to 1,430 ft, a difference of 860 ft: hilly country. The highest named summit within 15 miles is Marys Peak, about 4,080 ft, 7 miles south-southwest.
Under the town center the state geologic map shows Tyee Formation (sandstone), from the Middle Eocene, 38 to 48 million years old.
The section below crosses 5 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.
Sandstone. Age: Middle Eocene, 38 to 48 million years old. About 17 mi of the line.
Basalt. Age: Paleocene to Middle Eocene, 38 to 66 million years old. About 4 mi of the line.
Gabbro. Age: Oligocene, 23 to 34 million years old. About 2 mi of the line.
Coarse-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. About 0.4 mi of the line.
Sand, gravel, silt. Age: Holocene, less than 12,000 years old. About 0.3 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 Blodgett reaches the Pacific Ocean by way of the Marys, the Willamette and the Columbia: about 270 river miles.
Lake on the way: Willamette Falls Hydroelectric Power Reservoir.
100 miles of the trip are on the Columbia.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Blodgett; river miles along the main stem, rounded.
Blodgett has a warm-summer Mediterranean climate. Summer afternoons average 83° in August; winter nights fall to about 28° in January. A normal year brings about 5 inches of snow; with the rain, that comes to about 69 inches of water.
On November 14 Blodgett normally reaches 53° and falls to 31°. The record high is 69°, in 1999; the record low 20°, in 1978. The most rain on this date, 3.37 in, fell in 1942.
Normals 1991–2020 and records since 1936 at Corvallis Water Bureau, 7 miles south-southeast. NOAA, through RCC-ACIS.
