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Willamette Valley -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-12) |
 | | It has formed the cultural and political heart of Oregon since the days of the (additional info and facts about Oregon Territory) Oregon Territory, and is home to nearly 20% of Oregon's population (or 60% if the Portland area is included). |
 | | It is bounded on the south by the (additional info and facts about Calapooya Mountains) Calapooya Mountains, which separate the headwaters of the Willamette from the (additional info and facts about Umpqua River) Umpqua River valley. |
 | | The floodwaters carried rich volcanic and glacial soil from Eastern Washington, which was deposited across the valley floor when the waters subsided. |
| www.absoluteastronomy.com /encyclopedia/w/wi/willamette_valley.htm (552 words) |