Santiam Pass

Santiam Pass
Mount Jefferson, Three Fingered Jack, Hogg Rock and U.S. Route 20 near Santiam Pass
Elevation	4,817 ft (1,468 m)
Traversed by	US 20
Location	Jefferson – Linn counties, Oregon, United States
Range	Cascades
Coordinates	44°23.3′N 121°50.7′W

Santiam Pass is a 4,817-foot (1,468 m) mountain pass in the Cascade Range in central Oregon in the United States. It is located on the border between Linn and Jefferson counties, about 18 mi (29 km) northwest of Sisters, between the prominent volcanic horns of Three Fingered Jack to the north and Mount Washington to the south. Several other smaller volcanoes, including cinder cones and tuyas, are found near the summit of the pass. U.S. Route 20 connects eastern Oregon with the valley of the Santiam River on the west via Santiam Pass. One of the 19 or 20 lakes by the name of Lost Lake is located beside the highway just west of Santiam Pass. The pass may be approached from the west by three distinct routes:

• Oregon Route 22, also known as the North Santiam Highway, proceeds southeast from Salem and follows the North Santiam River to Santiam Junction.
• U.S. Route 20, which follows the South Santiam River from the Albany–Corvallis area to Santiam Junction.
• Oregon Route 126, which follows the McKenzie River northeast from Eugene.

From the east, Santiam Pass is approached from the town of Sisters; however, immediately east of Sisters, U. S. Highway 20 and Oregon Route 126, which share the route over the pass, split with Oregon Route 126 going northeast to Redmond and Prineville, Oregon and U. S. Route 20 heading southeast to Bend.

History

While the pass was known by native peoples, the first recorded crossing of the pass was in April 1859 by an expedition searching for a cattle trail over the Cascade Range from the Willamette Valley to Central Oregon. This expedition was led by Andrew Wiley, who reportedly climbed a tall tree on a mountain near Lost Prairie to help determine the route. Lost Prairie is located along Hackleman Creek between Fish Lake and Tombstone Prairie. Wiley later helped establish the Santiam Wagon Road.

Originally known as Hogg Pass, after Col. T. Egenton Hogg who designated this crossing for his proposed railroad, Santiam Pass was renamed in 1929 when the Santiam Highway was completed. The original Santiam Pass is located three miles south and was discovered in 1859.

Climate

{{Weather box |location = Bend, Oregon (1991–2020 normals, extremes 1901–present) |single line = Y

|Jan high F = 34.4 |Feb high F = 36.9 |Mar high F = 39.9 |Apr high F = 44.6 |May high F = 53.1 |Jun high F = 62.4 |Jul high F = 72.0 |Aug high F = 71.6 |Sep high F = 62.3 |Oct high F = 51.9 |Nov high F = 37.8 |Dec high F = 34.3 |year high F= |Jan mean F = 27.9 |Feb mean F = 29.8 |Mar mean F = 32.0 |Apr mean F = 35.4 |May mean F = 42.3 |Jun mean F = 49.8 |Jul mean F = 57.4 |Aug mean F = 57.3 |Sep mean F = 50.3 |Oct mean F = 42.1 |Nov mean F = 31.7 |Dec mean F = 28.1 |year mean F= 47.6 |Jan low F = 21.3 |Feb low F = 22.7 |Mar low F = 24.1 |Apr low F = 26.2 |May low F = 31.4 |Jun low F = 37.1 |Jul low F = 42.7 |Aug low F = 42.9 |Sep low F = 38.3 |Oct low F = 32.2 |Nov low F = 25.6 |Dec low F = 21.9 |year low F= |Jan avg record high F =50 |Feb avg record high F =52 |Mar avg record high F =55 |Apr avg record high F =64 |May avg record high F =74 |Jun avg record high F =82 |Jul avg record high F =89 |Aug avg record high F =87 |Sep avg record high F =81 |Oct avg record high F =72 |Nov avg record high F =58 |Dec avg record high F =49 |year avg record high F=90 |Jan avg record low F =1 |Feb avg record low F =5 |Mar avg record low F =10 |Apr avg record low F =14 |May avg record low F =22 |Jun avg record low F =28 |Jul avg record low F =32 |Aug avg record low F =31 |Sep avg record low F =27 |Oct avg record low F =21 |Nov avg record low F =13 |Dec avg record low F =3 |year avg record low F=-3 |Jan record high F = 71 |Feb record high F = 76 |Mar record high F = 83 |Apr record high F = 93 |May record high F = 93 |Jun record high F = 107 |Jul record high F = 104 |Aug record high F = 103 |Sep record high F = 100 |Oct record high F = 91 |Nov record high F = 77 |Dec record high F = 68 |year record high F= 107 |Jan record low F = −23 |Feb record low F = −13 |Mar record low F = −10 |Apr record low F = 4 |May record low F = 9 |Jun record low F = 21 |Jul record low F = 28 |Aug record low F = 24 |Sep record low F = 17 |Oct record low F = 8 |Nov record low F = 3 |Dec record low F = −16 |year record low F= −26 |precipitation colour = green |Jan precipitation inch = 13.81 |Feb precipitation inch = 10.14 |Mar precipitation inch = 9.08 |Apr precipitation inch = 6.24 |May precipitation inch = 3.71 |Jun precipitation inch = 3.18 |Jul precipitation inch = 1.31 |Aug precipitation inch = 1.82 |Sep precipitation inch = 3.74 |Oct precipitation inch = 6.48 |Nov precipitation inch = 12.68 |Dec precipitation inch = 15.42 |year precipitation inch= |Jan snow inch = 97.0 |Feb snow inch = 65.5 |Mar snow inch = 72.6 |Apr snow inch = 37.9 |May snow inch = 12.7 |Jun snow inch = 0.8 |Jul snow inch = 0.0 |Aug snow inch = 0.0 |Sep snow inch = 0.9 |Oct snow inch = 13.4 |Nov snow inch = 58.1 |Dec snow inch = 92.3 |year snow inch=

Nearby volcanoes

• Three Fingered Jack
• Hogg Rock
• Hoodoo Butte
• Hayrick Butte
• Mount Washington

See also

• McKenzie Pass – Santiam Pass Scenic Byway
• Santiam Junction State Airport, located west of the pass along U.S. Route 20