This paper describes the design of the marine riser structures, including the design measures for sealing and protection from flooding, dewatering and connection to the main tunnels, for the Gold Coast desalination plant in Queensland. The risers connect the intake and discharge tunnels to the ocean._x000D_
Construction commenced on both in April 2007._x000D_
The paper describes the key design criteria for the risers, the construction constraints that influenced the design and the design of the main elements of the risers and the connections to the tunnels.