Pacific Institute Insights

National Geographic ScienceBlogs: The Promise and Threat of Ethiopia’s Dam on the Nile: 21st century Water Conflicts

By Peter Gleick, President

June 2, 2013 

The Nile River – river of legend – is not just a river in Egypt. It is the lifeblood of 11 different African nations and the longest river in the world, extending over 6,500 kilometers long and draining a watershed of over 3 million square kilometers. The eleven nations that share the Nile are Egypt, Ethiopia, the Sudan and South Sudan, Kenya, Eritrea, the DR of Congo, Tanzania, Uganda, Burundi, and Rwanda.

The river is really two major rivers: the White Nile and the Blue Nile, which meet near Khartoum and become the mainstem of the Nile, flowing north to Egypt and the Mediterranean.  The White Nile originates in the highlands of the Great Lakes region of Rwanda and Burundi. The Blue Nile originates in the Lake Tana region of Ethiopia. Of all of the water that reaches Egypt, the majority comes in the Blue Nile.

Over the past centuries, indeed over the past millennia, the waters of the Nile have been captured and harnessed by the people of Egypt, who depended initially on the ebb and flow of the river for recession agriculture, and in modern times, on hydropower and irrigation waters pulled from the massive Aswan Dam or from downstream diversion systems. By some estimates, 97% of all of Egypt’s water comes from the Nile, and to say that the nation is critically dependent upon it – with a population of more than 80 million people — is an understatement.

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