Articles | Volume 11, issue 2
https://doi.org/10.5194/esurf-11-287-2023
https://doi.org/10.5194/esurf-11-287-2023
Research article
 | 
14 Apr 2023
Research article |  | 14 Apr 2023

Pristine levels of suspended sediment in large German river channels during the Anthropocene?

Thomas O. Hoffmann, Yannik Baulig, Stefan Vollmer, Jan H. Blöthe, Karl Auerswald, and Peter Fiener

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Short summary
We analyzed more than 440 000 measurements from suspended sediment monitoring to show that suspended sediment concentration (SSC) in large rivers in Germany strongly declined by 50 % between 1990 and 2010. We argue that SSC is approaching the natural base level that was reached during the mid-Holocene. There is no simple explanation for this decline, but increased sediment retention in upstream headwaters is presumably the major reason for declining SSC in the large river channels studied.