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  • File:UpconingWell.jpg
    Upconing brackish water under a pumping well.
    (850 × 854 (339 KB)) - 12:37, 5 April 2020
  • File:PolderDrainage.jpg
    Drainage of a polder causing upconing of brackish water into the ditches.
    (1,263 × 936 (584 KB)) - 12:38, 5 April 2020
  • File:Freshmaker.jpg
    Principle of the freshmaker system: withdrawal of brackish groundwater to make room for a thick fresh water lens.
    (1,299 × 930 (580 KB)) - 12:48, 5 April 2020
  • File:Freshkeeper.jpg
    Principle of the freshkeeper system: removal of brackish groundwater to a lower aquifer to make room for storage of fresh water.
    (849 × 854 (296 KB)) - 12:49, 5 April 2020