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The Disi Sandstone Fossil Aquifer Of Jordan: Construction And Monitoring Of The Dubaydib Wellfield In The Southern Desert Supplying Amman Andreas Charalambous1* And Bertrand Burnet2 1 Hydrolaw

Congress: 2015
Author(s): Andreas Charalambous (Guildford, UK), Bertrand Burnet
Diwaco1

Keyword(s): Sub-theme 2: Surface water and groundwater,
AbstractThe idea of supplying Amman, the capital of Jordan, from the fossil Disi sandstone aquifer in the Southern Desert, some 320 km to the south, goes back to the early 1980s. Since then the aquifer has been used to supply the coastal town of Aqaba and local villages, and for irrigation by private companies. The groundwater of the Disi aquifer is 10,000 to 35,000 years old, but of good quality suitable for potable supply, although recently there has been some concern due to high concentrations of radium. The construction of the Dubaydib wellfield began in 2010, after many years of studies, investigations and modelling. It was completed in 2013 and first water reached Amman in July of the same year. The wellfield comprises fifty five production wells (46 for continuous production and 9 stand-by/rotation) to depths of 500-600 m. The target production is 100 million cubic meters per year. Pumping water levels are expected to reach depths of 250 to 300 m below ground. Wellfield behaviour is closely monitored by instrumentation measuring well water levels, abstraction and water quality, whilst periodic aquifer modelling provides information on aquifer behaviour and trends.
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