Harnessing the Earth's Rivers
One of the world's earliest major dams was built across the Garawi valley in Egypt about 3000 BC. Used to regulate flood waters, it was some 106 m (350 ft) long and was made of packed earth with masonry walls. Egypt is also the home of one of world's finest modern dams - the Aswan High Dam, 114 m (375 ft) high and 4 km (2.5 miles) long. The world's largest concrete dam and largest concrete structure (pre 2000, waiting information about Three Gorges, China, which I gather is almost 3 times the size.) is the Grand Coulee on the Columbia river in Washington State, USA. It contains some 8,092,000 metres³ (10,585,000 yards³) of concrete.
The World's Greatest Dams.
Dam	Location	Length		Height
		metres	feet	metres	feet
Three Gorges	Yangtze River, China	2,100	6,864	186.1	610
New Cornelia Tailings (most massive)	USA	(volume) - (m³),  (yds³)		209,501,000	274,015,753
Yacireta-Apipe (longest)	Paraguay/Argentina	72,468	237,600	(height not given)
Grand Dixence (highest)	Switzerland	(height only)		285	935
Other Well-known Dams:
Grand Coulee	Washington State,USA	1,272	4,173	167	548
Aswan High	Egypt	4,026	13,200	114	375
Bonneville	Oregon, USA	.	.	.	.
Eder	Germany	.	.	.	.
Eucumbene	New South Wales, Australia	.	.	.	.
Hartebeestpoort	Transvaal, South Africa	.	.	.	.
Hoover	Colorado River, USA	.	.	.	.
Kariba	Zimbabwe-Zambia	.	.	.	.
Mohne	Germany	.	.	.	.
Roosevelt	Arizona, USA	.	.	.	.
Now I revert to the pleading again. As you can see, much of the information on the lesser dams is missing. Anyone that can help with any of the missing details please e-mail the info. Thanks in anticipation.

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