Engineering Design Services for Wyhl/Weisweil Retention Basin – Wells, Pipelines, and Gauges

Summary

The Regierungspräsidium Freiburg is procuring engineering design services for the first phase of the planned Wyhl/Weisweil retention basin on the Rhine. Services include object planning for groundwater extraction wells, control gauges, and pipelines to discharge extracted groundwater, plus site supervision and geotechnical investigation support. The retention basin covers 595 hectares with a retention volume of 7.7 million cubic meters. Tender documents must be prepared by end of November 2027, with construction completion targeted for end of 2030.