Galata Port, Turkey

WJ have long been established as one of the leading dewatering contractors in the UK and Europe and in the Middle East. This project bridged those two distinct regions with the Galata Port project in Istanbul, one of the largest cities in Turkey.

Istanbul, at the mouth of the Bosporus, has long acted as a gateway between Europe and Asia. The Galata Port was first constructed in the late 19th Century to first service trade in to the Black Sea, and then subsequently for tourism. The new port development would transform the district by creating a public promenade, redevelop Tophane Square, and restore numerous historical buildings; opening the area to the public for the first time in 200 years. All of this was to be achieved by moving the existing passenger boarding and docking services underground.

The $700m development, operated by the newly formed Galataport Istanbul Port Management and Investments Inc, employed Trevi to lead the works. The relationship between WJ and Trevi is long established from our works in the Middle East and Europe, and therefore, despite not being previously established in Turkey, WJ were the natural choice to tackle the issue of groundwater control for the project.

The area of Istanbul where the works were to take place is characterised by sandy marine deposits overlying weathered greywackes – prime dewatering conditions. Our works were split in to two main packages, the Karakoy and Salipazari packages, both of which required differing dewatering approaches.

The Karakoy site required a different approach and a bespoke sump pumping system was designed to allow new basements to be constructed underneath existing buildings. The Salipazari site was significantly more extensive, and required the installation of a significant deepwell dewatering system, complemented by piezometers with a GSM monitoring system, to control groundwater flows of up to 25l/s. The system of sixty-eight deepwells and fourteen piezometers alone make this project one of the largest individual projects WJ have undertaken in recent years.

You can read more about the project here.



  • LOCATION: Istanbul, Turkey
  • CLIENT: Galataport Istanbul Port Management and Investments Inc


  • Basement
  • Basements
  • Building
  • Deepwell Systems
  • Excavations
  • Instrumentation & Monitoring
  • Sand
  • Sandstone
  • Sump Pumps

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