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〕 | source_elevation_imperial = 222 | source_elevation_note = 〔Google Earth elevation for GNIS coordinates〕 | mouth_name = Willamette River | mouth_location = between Albany and Salem | mouth_district = Marion County | mouth_region = Willamette Valley | mouth_state = Oregon | mouth_country = | mouth_lat_d = 44 | mouth_lat_m = 45 | mouth_lat_s = 16 | mouth_lat_NS = N | mouth_long_d = 123 | mouth_long_m = 08 | mouth_long_s = 51 | mouth_long_EW = W | mouth_coordinates_note = 〔 | mouth_elevation_imperial = 164 | mouth_elevation_note = 〔 | tributary_left = | tributary_left1 = | tributary_right = | tributary_right1 = | tributary_right2 = | free_name = | free_value = | map = Oregon Locator Map.PNG | map_size = 300 | map_caption = Location of the mouth of the Santiam River in Oregon | map_locator = Oregon | map1 = | map1_size = | map1_caption = | commons = }} The Santiam River is a tributary of the Willamette River, about long, in western Oregon in the United States. Through its two principal tributaries, the North Santiam and the South Santiam rivers, it drains a large area of the Cascade Range at the eastern side of the Willamette Valley east of Salem and Corvallis. The main course of the river is short, formed in the Willamette Valley by the confluence of the North and South Santiam rivers on the border between Linn and Marion counties approximately northeast of Albany. It flows generally west-northwest in a slow meandering course to join the Willamette from the east approximately north of Albany. Both the North and South Santiam rise in high Cascades in eastern Linn County. The Middle Santiam River joins the South Santiam where the South Santiam is impounded to form Foster Lake. The North Santiam is impounded to form the deep Detroit Lake in the Cascades. The Santiam is a major source of water supply for Salem. The Great Willamette Flood of 1861, which crested on December 2, destroyed a number of towns on the Santiam branches, most notably Champoeg and Linn City.〔The Great Willamette Flood of 1861 destroyed numerous towns, most notably Champoeg and Linn City.〕 ==See also== *List of Oregon rivers 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Santiam River」の詳細全文を読む スポンサード リンク
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