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| | Nile. The Columbia Encyclopedia, Sixth Edition. 2001-05 |
 | | The Blue Nile rises in the headwaters of Lake Tana, NW Ethiopia, a region of heavy summer rains, and is the source of floodwaters that reach Egypt in September; the Blue Nile contributes more than half of all Nile waters throughout the year. |
 | | The traditional system of basin irrigationin which Nile floods were trapped in shallow basins and a cool-season crop of wheat or barley was grown in soaked and silt-replenished soilhas been replaced since the mid-1800s by a system of perennial irrigation and the production of two or three crops a year, including cotton, sugarcane, and peanuts. |
 | | James Bruce, the Scottish explorer, identified (1770) Lake Tana as the source of the Blue Nile, and John Speke, the British explorer, is credited with the identification (186162) of Lake Victoria and Ripon Falls as the source of the White Nile. |
| www.bartleby.com /65/ni/Nile.html (784 words) |
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