The Sunriver 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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−14° on Nov. 15, 1955, the coldest reading for this week of the year since 1901. Next is −4° in 1909.
Sunriver’s center stands about 4,180 ft above sea level. Within three miles the land runs from 4,150 ft to 4,620 ft, a difference of 470 ft: hilly country. The highest named summit within 15 miles is Mount Bachelor, about 9,030 ft, 14 miles west-northwest.
Under the town center the state geologic map shows Basalt and basaltic andesite (basalt, basaltic-andesite), from the Pleistocene, less than 2.6 million years old.
The section below crosses 8 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.
Basalt, basaltic-andesite. Age: Pleistocene, less than 2.6 million years old. About 11 mi of the line.
Gravel, sand. Age: Holocene, less than 12,000 years old. About 4 mi of the line.
Basaltic-andesite, basalt. Age: Early Pliocene to Pleistocene, 1.2 to 3.9 million years old. About 4 mi of the line.
Basalt, andesite. Age: Miocene to Pleistocene, less than 23 million years old. About 2 mi of the line.
Basaltic-andesite. Age: Holocene, less than 12,000 years old. About 1 mi of the line.
Basalt, andesite. Age: Miocene to Holocene, less than 23 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. 2 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 Sunriver reaches the Pacific Ocean by way of the Deschutes and the Columbia: about 390 river miles.
Lake on the way: Lake Billy Chinook.
200 miles of the trip are on the Columbia.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Sunriver; river miles along the main stem, rounded.
Sunriver has a cold semi-arid climate. Summer afternoons average 84° in July; winter nights fall to about 23° in December. A normal year brings about 22 inches of snow; with the rain, that comes to about 11 inches of water.
On November 14 Sunriver normally reaches 50° and falls to 29°. The record high is 69°, in 2016; the record low −9°, in 1955. The most rain on this date, 0.85 in, fell in 1942.
Normals 1991–2020 and records since 1901 at Bend, 14 miles north-northeast, 520 ft lower. NOAA, through RCC-ACIS.
