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Progress and schedule

We anticipate an approximately five-year construction period. Construction is scheduled to start in December 2023. Since the project requires modifications to meet additional requirements in terms of flood discharge, earthquake resistance and the latest research on fish ladders, the project planning has been delayed. 

Below, you can see which construction steps have already been completed and which are scheduled to start shortly:


  • Completion of the “Construction project update” phase
  • October 2022: Implementation of the embankment reinforcements, including local compensation and substitution measures
  • December 2022: Clearing of an area of around 700 square metres to the east of the weir


  • Implementation project planning, contractor tendering, concept approvals resulting from construction requirements
  • May 2023: Completion of the gravel fill along the embankments of the canal in Obergösgen
  • December 2023: Commencement of the main construction work

Approx. 2024

  • Commencement of the main construction steps on the weir
  • Commencement of compensatory and substitution measures