The Days Creek 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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76° on Nov. 13, 1995, the hottest reading for this week of the year since 1899. Next is 74° in 1999.
Days Creek’s center stands about 800 ft above sea level. Within three miles the land runs from 740 ft to 2,250 ft, a difference of 1,510 ft: steep hill country. The highest named summit within 15 miles is Cedar Springs Mountain, about 5,090 ft, 15 miles south.
The section below crosses 10 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.
Quartz-diorite, diorite. Age: Late Jurassic to Early Cretaceous, 100 to 164 million years old. About 5 mi of the line.
Mudstone, graywacke. Age: Late Jurassic, 153 to 164 million years old. About 5 mi of the line.
Siltstone, sandstone. Age: Late Jurassic to Early Cretaceous, 125 to 153 million years old. About 4 mi of the line.
Andesite. Age: Late Jurassic, 145 to 164 million years old. About 4 mi of the line.
Peridotite, serpentinite. Age: Paleozoic to Jurassic, 145 to 542 million years old. About 1 mi of the line.
Graywacke, mudstone. Age: Late Jurassic, 145 to 153 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. 4 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 Days Creek reaches the Pacific Ocean by way of Days Creek, the South Umpqua and the Umpqua: about 170 river miles.
110 miles of the trip are on the Umpqua.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Days Creek; river miles along the main stem, rounded.
Days Creek has a warm-summer Mediterranean climate. Summer afternoons average 89° in August; winter nights fall to about 37° in January. About 31 inches of rain fall in a normal year, with about 2 inches of snow.
On November 14 Days Creek normally reaches 58° and falls to 41°. The record high is 70°, in 1999; the record low 13°, in 1978. The most rain on this date, 1.99 in, fell in 1958.
Normals 1991–2020 and records since 1899 at Riddle, 10 miles west, 120 ft lower. NOAA, through RCC-ACIS.
