Tryon Creek is a 4.85-mile (7.81 km) tributary of the Willamette River in the U.S. state of Oregon. Part of the drainage basin of the Columbia River, its watershed covers about 6.5 square miles (16.8 km2) in Multnomah and Clackamas counties. The stream flows southeast from the Tualatin Mountains (West Hills) through the Multnomah Village neighborhood of Portland and the Tryon Creek State Natural Area to the Willamette in the city of Lake Oswego. Parks and open spaces cover about 21 percent of the watershed, while single-family homes dominate most of the remainder. The largest of the parks is the state natural area, which straddles the border between the two cities and counties. The bedrock under the watershed includes part of the last exotic terrane, a chain of seamounts, acquired by the North American Plate as it moved west during the Eocene. Named for mid-19th century settler, Socrates Hotchkiss Tryon, Sr., the creek ran through forests of cedar and fir. Efforts to establish a large park in the watershed began in the 1950s and succeeded in 1975 when the state park was formally established. As of 2005, about 37 percent of the watershed was wooded and supported more than 60 species of birds as well as small mammals, amphibians, and fish.
Read the rest of this article: <http://en.wikipedia.org/wiki/Tryon_Creek> _______________________________ Today's selected anniversaries: 1660: Charles II of England issued the Declaration of Breda, describing his conditions for the Restoration of the crown of England. <http://en.wikipedia.org/wiki/Declaration_of_Breda> 1841: William Henry Harrison became the first U.S. President to die in office, 32 days into his term, sparking a brief constitutional crisis regarding questions of presidential succession that were left unanswered by the U.S. Constitution. <http://en.wikipedia.org/wiki/William_Henry_Harrison> 1969: Surgeons Denton Cooley and Domingo Liotta implanted the first total artificial heart. <http://en.wikipedia.org/wiki/artificial_heart> 1975: Bill Gates and Paul Allen founded Microsoft in Albuquerque, New Mexico, to develop and sell BASIC interpreters for the Altair 8800. <http://en.wikipedia.org/wiki/Microsoft> 1979: Deposed Pakistani Prime Minister Zulfikar Ali Bhutto was executed. <http://en.wikipedia.org/wiki/Zulfikar_Ali_Bhutto> 2002: The Angolan government and UNITA rebels signed a peace treaty, agreeing to follow the 1994 Lusaka Protocol and ending the decades-long Angolan Civil War. <http://en.wikipedia.org/wiki/Angolan_Civil_War> _____________________________ Wiktionary's word of the day: roundabout (adj): [[indirect <http://en.wiktionary.org/wiki/roundabout> ___________________________ Wikiquote quote of the day: 182px You may write me down in history With your bitter, twisted lies, You may trod me in the very dirt But still, like dust, I'll rise. --Maya Angelou <http://en.wikiquote.org/wiki/Maya_Angelou> _______________________________________________ Wikipedia Daily Article mailing list. To unsubscribe, visit: https://lists.wikimedia.org/mailman/listinfo/daily-article-l Questions or comments? Contact [email protected]
