Dornburg Old Elbe

Alte Elbe is the name for cut, former river sections of the Elbe (oxbow lakes), as they arise when two river loops (meanders) come into contact with each other, after course shifts or river straightening.
The longest stretch of the "Old Elbe" is the Dornburg Old Elbe, it branches off from the main stream southeast of Magdeburg near Dornburg and runs in many loops about 20 km parallel to the Elbe; it ends at Magdeburg-Salbke. The Elbe Umflutkanal branches off from the Old Elbe near Plötzky and returns to the Elbe at Lostau (northeast of Magdeburg). In the section from the flood canal, the Dornburger Alte Elbe is now threatened with silting as a result of the closure of the fresh water inflow.

The Federation for Environment and Nature Conservation Germany has been campaigning for the revitalization of the Dornburg Old Elbe since 2010 in order to stop the silting process. [1] After the project failed in 2010 due to issues of responsibility, among other things, the neighboring municipalities of Magdeburg, Schönebeck and Salzlandkreis signed a joint declaration on revitalization together with representatives of the State Office for Flood Protection and Water Management, the Ministry of the Environment, the Middle Elbe Biosphere Reserve and the entertainment association in spring 2017 the Old Elbe. [2] In the project description of the BUND a solution is proposed in which the sludge to be dredged is brought into the upstream part of the water and remains there. This means that the sludge contaminated with heavy metals (especially arsenic) is not subject to waste legislation.

Further information and source:
de.m.wikipedia.org/wiki/Alte_Elbe