Jump to content

Qattara Depression Project

Coordinates: 29°30′00″N 27°30′00″E / 29.5000°N 27.5000°E / 29.5000; 27.5000
From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Ita140188 (talk | contribs) at 07:50, 20 October 2016 (section reorganization). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Map of the Qattara Depression with waterway routes.
All proposed routes for a tunnel and/or canal route from the Mediterranean Sea towards the Qattara Depression

The Qattara Depression Project, or shortly the Qattara Project, is a concept for a large civil engineering project in Egypt, rivaling the Aswan High Dam, intended to develop the Qattara Depression by flooding it.[1] The depression is a region that lies below sea level and is currently a vast desert. By connecting the region and the Mediterranean Sea with tunnels and/or canals, water could be let into the area. The inflowing water would then evaporate quickly because of the desert climate. This way a continuous flow of water could be created if inflow and evaporation were balanced out. With this continuously flowing water hydroelectricity could be generated. Eventually this would result in a hypersaline lake or a salt pan as the water evaporates and leaves the salt it contains behind.

The proposals call for a large canal or tunnel being excavated of about 55 to 80 kilometres (34 to 50 mi) depending on the route chosen to the Mediterranean Sea to bring seawater into the area.[2] Or otherwise a 320 kilometre (200 mile) pipeline north-east to the freshwater Nile River at Rosetta.[3][4] For comparison, the nearby Suez Canal is currently 193 kilometres in length.[5] By balancing the inflow and evaporation the lake level can be held constant. Several proposed lake levels are -70, -60, -50 and -20 m. Flooding the depression to -20 m would lower the height of the world ocean by 2.16 milimeters.[6]

History

Plans to use the Qattara Depression for the generation of electricity date back to 1912 from Berlin geographer Professor Penck.[7] In 1957 the American Central Intelligence Agency proposed to President Dwight Eisenhower that peace in the Middle East could be achieved by flooding the Qattara Depression. The resulting lagoon, according to the CIA, would have four benefits:[8]

  • It would be "spectacular and peaceful."
  • It would "materially alter the climate in adjacent areas."
  • It would "provide work during construction and living areas after completion for the Palestinian Arabs."
  • It would get Egyptian president Gamel Abdel Nasser's "mind on other matters" because "he need[ed] some way to get off the Soviet Hook."

Ball period

The subject was discussed in more detail by Dr. John Ball in 1927.[9] Dr. Ball also made the first preliminary calculations on filling rate, electricity production and salinity.

"Non-Egyptians seemed to be unaware of Qattara's existence until after the First World War. The credit for its "discovery" goes to Dr. John Ball (1872–1941), English director of the Survey of Egypt, who oversaw the mapping of the depression in 1927 and who first suggested using it to generate hydroelectricity."[10]

Bassler period

See also: Friedrich Bassler

From 1964 onward Prof. Friedrich Bassler led the international "Board of Advisers" which was responsible for planning and financing activities of the project. He also advised the Egyptian government on the matter from 1975 onward. He was appointed to make a first preliminary feasibility study by the German Federal Ministry of Economics in Bonn.[11]

Bassler was the driving force behind the Qattara Project for nearly a decade. Half way through the seventies a team of eight mostly German scientists and technicians was working on the planning of the first hydro-solar depression power station in the world. The first "Bassler-study" of 1973 laid the basis for the Egyptian government to commission a study of its own. It decided in 1975 that Bassler and a group of companies known as "Joint Venture Qattara" should conduct a feasibility study of the project.

The project concept was: Mediterranean water should be channeled through a canal or tunnel towards the Qattara Depression which lies below sea level. This water would then fall into the depression through penstocks for electricity generation. The water would evaporate quickly because of the very dry and hot weather once in the depression. This would allow for more water to enter the depression and would create a continuous source of electricity.

A canal 60 meters deep would connect the Mediterranean with the depressions edge at this narrow isthmus. This canal would deliver water to the depression as well as being a shipping route towards the Qattara lake with a harbor and fishing grounds in the depression. The depression was to be filled to a height of 60 m below sea level. It would take a total of 10 years to fill to that level. After that the incoming flow would balance out against the outgoing evaporation and would cause the lake level to stop changing.

In the first phase of the project the Qattara 1 station was to generate 670 megawatts. The second phase was to generate an additional 1200 megawatts. A pumped-storage hydroelectricity facility would increase the peak production capacity with another 4000 megawatts, totaling about 6800 megawatts.

The core problem of the entire project was the water supply to the depression. Calculations showed that digging a canal or tunnel would be too expensive. Bassler decided to use nuclear explosions to excavate the canal. Exactly 213 boreholes would each have a nuclear explosive charge of 1.5 megatons. Every one of these bombs would have an explosive yield one hundred times that of the atomic bomb of Hiroshima. This fit within the Atoms for Peace program proposed by President Dwight Eisenhower in 1953.

Evacuation plans cited numbers of at least 25,000 evacuees. Further problems arose with the tectonically unstable Red Sea Rift located just 450 km away from the blast site on which the shock waves of the explosions would not have remained without result. Also salinization or outright contamination of groundwater had to be counted among the problems created by the saltwater Qattara sea. This groundwater is vital to the oases of Bahariya and Siwa.

Another danger was increased coast erosion because sea currents could change in such a way that even very remote coastal areas would erode. A massive de-mining operation would also have to be executed to remove millions of mines and UXOs left from World War II.

Because of the concerns about using a nuclear solution the Egyptian government turned down the plan,[12] and the project's stakeholders gave up on the project.

Renewed interest

Present day scientists still explore the viability of such a project, as a key to resolving economic, population, and ecological stresses in the area, but the project has yet to be undertaken.[13]

Freshwater alternative

Despite its many benefits, the proposed saltwater Qattara sea would have the potentially devastating ecological demerits of salinization and contamination of groundwater. An alternative project would be to divert some of the Nile's floodwaters, creating a (mainly)[14] freshwater lake and replenishing fresh groundwater.[15][16]

This "Nilewater scheme" has the following difficulties:

  • The canal link to the Nile would be even longer and more costly than the seawater scheme;
  • The supply of water would be much more limited, so that...
  • … any hydroelectric output would be very much reduced, and
  • … the lake would take much longer to form.

However, the benefits of a freshwater lake in the Sahara are obvious and manifold. In addition to the merits of the seawater scheme, the lake would contain drinkable water, there would be no increase in salinisation, and the water table would be replenished with fresh water, thereby restocking existing oases and perhaps creating new springs. A freshwater lake would encourage vegetation, wildlife (including birds and freshwater fish). The water would carry some Nile silt, which would help establish a soil culture. Salt pans could produce a saleable product (salt), and gradually help the process of desalination of the Qattara Depression. The project would provide employment and the opportunity for new homes.

See also

References

  1. ^ "Flooding the Qattara Depression – The Basement Geographer".
  2. ^ Ragheb, M. 2010. Pumped Storage Qattara Depression Solar Hydroelectric Power Generation.pdf. Published on 28 October 2010.
  3. ^ Mahmoud, Mohamed. The River Nile – Qattara Depression Pipeline, June 2009
  4. ^ User:TGCP Great Circle Mapper – Rosetta to Qattara, 2011
  5. ^ "Archived copy". Archived from the original on June 3, 2010. Retrieved April 14, 2010. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)CS1 maint: archived copy as title (link)
  6. ^ Administration, US Department of Commerce, National Oceanic and Atmospheric. "How much water is in the ocean?".{{cite web}}: CS1 maint: multiple names: authors list (link)
  7. ^ Murakami M. Managing water for peace in the Middle East[permanent dead link‍] United Nations University Press. p.64-66
  8. ^ MI: Gale. 2009. Farmington Hills, CIA Suggestions, Document Number CK3100127026. Reproduced in "Declassified Documents Reference System"
  9. ^ Ball, John. 1927. "Problems of the Libyan Desert: Geographical Journal"
  10. ^ Koger, Grove. 1999. "The Great Sahara Sea: An Idea Whose Time Has Come." Mercator's World. Volume 4 (2). March/April 1999. Page 23.
  11. ^ "Historie des Instituts und der Versuchsanstalt für Wasserbau". Technische Universität Darmstadt. Retrieved 2009-07-18.
  12. ^ Badescu, Viorel. 2011. Macro-Engineering Seawater In Unique Environments 1st Edition., 2011, XXXIX, 790 p. Springer
  13. ^ Kelada, Maher. Global Hyper Saline Power Generation Qattara Depression Potential MIK Technology
  14. ^ it would always be slightly brackish because of the existing salt marshes
  15. ^ "Qattara Depression Project".
  16. ^ "Managing water for peace in the Middle East".
  • M. A. Eizel-Din and M. B. Khalil.: "Egypt's Qattara Depression potential hydropower". – In: Proceedings of the international conference "Handshake across the Jordan – Water and Understanding in the Middle East". In: Forum Umwelttechnik und Wasserbau, Nr. 10. IUP – Innsbruck University Press, Innsbruck, 2011, pp. 89-96

29°30′00″N 27°30′00″E / 29.5000°N 27.5000°E / 29.5000; 27.5000

Retrieved from "https://en.wikipedia.org/w/index.php?title=Qattara_Depression_Project&oldid=745282967"