Rhein Water for New Lakes: Pipeline Construction Begins - Germany's Rhineland to Transform into a Vast Lake District by 2100
A vast transformation is underway in Germany's Rhineland region. By the end of the century, the area once dominated by lignite mining will become a sprawling lake district. Three massive open-pit mines—Hambach, Garzweiler, and Inden—will be flooded to create new lakes, reshaping the landscape for nature, tourism, and local jobs.
The project begins with a 10,000-pipe underground network, stretching from the Rhine to the mines. The steel pipes, measuring up to 7.2 feet in diameter, will carry water to fill the pits in stages. Construction of the intake facility, pumping station, and distribution hub is already planned, with completion set for 2030.
Hambach will be the first to flood, starting immediately after mining ends in 2029. Garzweiler will follow from 2036, once its operations cease by 2033. Inden, meanwhile, will begin filling in 2030 using water from the Rur River instead of the Rhine. The entire process is expected to take decades, with Hambach and Garzweiler reaching full capacity around 2070, and Inden requiring another 25 to 30 years. The new lakes will create habitats for wildlife and boost biodiversity. They will also open up space for leisure activities, tourism, and employment. However, the BUND NRW environmental group has raised concerns about the ecological effects of drawing large volumes of water from the Rhine. Once complete, the Rhineland Lake District will join a small group of post-mining landscapes in Germany. Similar projects, like the Leipziger Neuseenland and the Geiseltalsee—the country's largest artificial lake—have already transformed former mining zones into recreational areas.
The shift from mining to lakes marks a long-term change for the Rhineland. The three new bodies of water will eventually cover an area larger than many natural lakes in the region. Local authorities and environmental groups will continue monitoring the project's impact as the transformation unfolds over the coming decades.
