Half a century since Egypt's ground-breaking Aswan dam was inaugurated with much fanfare, harnessing the Nile for hydropower and irrigation, the giant barrier is still criticised for its human and environmental toll.

It is also a stark reminder -- amid high tensions today as Addis Ababa fills its colossal Grand Ethiopian Renaissance Dam (GERD) upstream -- of just how volatile politics over the life-giving, but finite, Nile water resources can be.

The Aswan High Dam was spearheaded in the early 1950s by charismatic pan-Arabist president Gamal Abdel Nasser.

Egypt, where the river provides some 97 percent of water for more than 100 million people, is the final section of the Nile's 6,650-kilometre (4,130-mile), 10-nation journey to the Mediterranean.

For millennia, the North African country was at the mercy of the seasonal rise and fall of the river, dependent on the rainfall in nations far upstream.

But the 111-metre-high and 3.6-kilometre-wide Aswan High Dam, dwarfing the far smaller Aswan Low Dam built under British rule in 1902, crucially gave Cairo power to regulate the flow.

- Water power -

It was a "very important hydro-political act", said geographer and author Habib Ayeb, a Nile expert who has taught at universities in Cairo and Paris.

The dam was inaugurated on January 15, 1971, three months after Nasser's death, by his successor Anwar al-Sadat.

For the first time, "an Egyptian president decided to manage the Nile within Egypt", to develop agriculture and the economy in the country, Ayeb added.

For Egypt, an otherwise desert nation where 97 percent of the population lives along the green and fertile Nile banks, the dam revolutionised its relationship with the land.

"The dam offered a reprieve to Egyptians by giving them enough water... and protecting them from the hazards of floods, which could be absolutely catastrophic," said Ayeb.

It also brought electricity to much of the country, a move Nasser said was key to developing the nation.

Abdel Hakim Hassanein, who overlooks the river from his home close to the dam, some 700 kilometres south of Cairo, praised its construction.

"We didn't have electricity before, we used oil lamps," the 68-year-old said, adding that work at the dem remains a key source of local jobs.

Ethiopia, the second most populous nation in Africa, today uses similar arguments, saying its 145-metre (475-foot) GERD Blue Nile barrier -- set to be Africa's largest hydro-electric dam -- is vital to provide power for its 110 million people.

But Egypt, with the Arab world's largest population, sees the GERD as an existential threat.

- 'Belly of the desert' -

In the 1960s, many Egyptians also saw the Aswan dam as a threat to their lives -- in a different way.

The lake behind the dam flooded the homeland of Egypt's Nubian people, forcing tens of thousands to leave.

"For the Nubians, the High Dam is a symbol of oppression," said rights activist Fawzi Gayer. "It wiped out a civilisation."

Gayer was born just after his family was relocated to a dusty town its Nubian residents call Abu Simbel "Displacement".

"We're talking about a community with a Nilotic identity that breathes the Nile... and we have been thrown into the belly of the desert," said Gayer.

"The elderly died of shock."

The Nubians' long-running demand for a "right of return" was included in the 2014 constitution, but their lands have been swallowed by the 355-kilometre-long Lake Nasser, which stretches south into Sudan.

It was not only people who had to move; the waters threatened to drown the three-millenium-old Pharaonic temples at Abu Simbel, kickstarting a massive UNESCO-led rescue mission that took eight years.

The ancient complex, including giant stone carved statues, was dismantled and moved to a new location, in one of the world's biggest archaeological rescue operations.

There were environmental consequences too.

The creation of the giant lake also upset the river's delicate ecosystem, holding back the fertile silt deposits, causing erosion and increasing use of chemical fertilisers.

- 'Political bomb' -

For Ayeb, the dam also "proved to be a political bomb".

In building Aswan, Egypt and Sudan agreed a Nile water sharing deal, but did not include any other upstream nations, including Ethiopia.

"It created the foundations for the break-up of the Nile basin as a framework for a common good," said Ayeb.

Today, Addis Ababa, Cairo and Khartoum are mired in long-running fractious talks over the filling and operation of the GERD dam.

But, according to Ayeb, the critical challenge for Egypt is the management of the water it gets at present.

"Even if Ethiopia stopped its dam, there wouldn't be enough water," he said, arguing Egypt should halt desert irrigation -- where nearly half the water is lost by evaporation -- and stop agricultural exports.

Ayeb believes Cairo needs a new water and agricultural policy entirely.

"Egypt must change everything," he said.

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Sudan voices frustration as latest Nile dam talks stall
Khartoum (AFP) Jan 10, 2021
Sudan warned Sunday it cannot continue the "vicious cycle" of negotiations with Egypt and Ethiopia in the long-running dispute over Addis Ababa's controversial Blue Nile mega dam. Last week, the three countries had agreed to hold further talks to agree the filling and operation of the vast reservoir behind the 145-meter (475-foot) tall hydropower Grand Ethiopian Renaissance Dam (GERD). But the latest meetings between foreign and water ministers "failed to reach an acceptable agreement to resume ... read more