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Topic: Casiquiare canal

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Casiquiare

Rio Negro

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1639 in science

	name (Site not responding. Last check: 2007-11-06)
		The natural canal connects the Orinoco to the Río Negro, and has long served as a stomping ground for various explorers including Alexander von Humboldt.
		There was a time that this canal was a legend in itself.
		It is suspected the Lope de Aguirre was the first European to come up the canal in 1561 as he marched through Venezuela to conquer Peru, but its existence was not confirmed until in the early 18th century when Frenchman Charles-Marie de la Condamine stumbled on to it.
	www.amazondiscover.com /amazon_info/venezuela/amazonas.htm (551 words)

	Casiquiare canal
		The actual elevation of the canal above sea-level is not known, but is of primary importance to the study of the hydrography of South America.
		The canal connects the upper Orinoco, 9 miles below the mission of Esmeraldas, with the Rio Negro affluent of the Amazon River near the town of San Carlos[?].
		To the west of the Casiquiare there is a much shorter and more facile connexion between the Orinoco and Amazon basins, called the isthmus of Pimichin[?], which is reached by ascending the Terni branch of the Atabapo[?] affluent of the Orinoco.
	www.ebroadcast.com.au /lookup/encyclopedia/ca/Casiquiare_canal.html (602 words)

	Casiquiare canal - Wikipedia, the free encyclopedia
		The Casiquiare is a distributary of the upper Orinoco, which flows southward into the Rio Negro.
		The canal connects the upper Orinoco, 9 miles below the mission of Esmeraldas, with the Rio Negro affluent of the Amazon River near the town of San Carlos.
		To the west of the Casiquiare there is a much shorter and more facile connexion between the Orinoco and Amazon basins, called the isthmus of Pimichin, which is reached by ascending the Terni branch of the Atabapo affluent of the Orinoco.
	en.wikipedia.org /wiki/Casiquiare_canal (639 words)

	[No title]
		The general slope of the plains through which the canal runs is south-west, but those of the Rio Negro slope south-east.
		The whole line of the Casiquiare is infested with myriads of tormenting insects.
		It is thus seen that this marvellous freak of nature is not, as is generally supposed, a sluggish canal on a flat tableland, but a great, rapid river which, if its upper waters had not found contact with the Orinoco, perhaps by cutting back, would belong entirely to the Negro branch of the Amazon.
	encyclopedia.jrank.org /correction/edit?locale=en&content_id=13796 (2987 words)

	Negro
		The Negro River, the great northern tributary of the Amazon River, has its sources along the watershed between the Orinoco and the Amazon basins, and also connects with the Orinoco by way of the Casiquiare canal.
		Its main affluent is the Uaupes[?], which disputes with the headwaters of the Guaviari[?] branch of the Orinoco the drainage of the eastern slope of the "Oriental", Andes of Colombia.
		In the mid 20th century it was considered the correct and proper term for African-Americans, but fell out of favor in the late 20th century.
	www.ebroadcast.com.au /lookup/encyclopedia/ne/Negro.html (207 words)

	Orinoco - LoveToKnow 1911
		A few large streams enter the lower Apure from the south, but they are frequently entangled in lateral canals, due to the slight elevation of the plains above sea-level, the waters of the Apure, especially during flood time, having opened a great number of canos before reaching the Orinoco.
		The delta is also cut into many irregular divisions by other canals which derive their flow from its great boundary rivers, the Corosimi and Vagre, and its numerous islands and vast swamps are covered with a dense vegetation.
		The Boca Grande outlet is the deepest, and is the main navigable entrance to the Orinoco at all seasons, the muddy bar usually maintaining a depth of 16 ft.
	www.1911encyclopedia.org /Orinoco (1534 words)

	Orinoco - Free net encyclopedia (Site not responding. Last check: 2007-11-06)
		Most of the important Venezuelan rivers are tributaries of the Orinoco, the largest being the CaronГ, which joins it at Puerto Ordaz, close to the Llovizna Falls.
		A peculiarity of the Orinoco river system is the Casiquiare canal, which starts as an arm of the Orinoco, and finds its way to the Rio Negro, a tributary of the Amazon, thus forming a 'natural canal' between Orinoco and Amazon.
		Casiquiare canal: in SE Venezuela, a distributary from the Orinoco flowing south to the Amazon
	www.netipedia.com /index.php/Orinoco (778 words)

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