Articles | Volume 29, issue 23
https://doi.org/10.5194/hess-29-6885-2025
https://doi.org/10.5194/hess-29-6885-2025
Research article
 | 
02 Dec 2025
Research article |  | 02 Dec 2025

Will groundwater-borne nutrients affect river eutrophication in the future? A multi-tracer study along the Elbe River

Julia Zill, Axel Suckow, Ulf Mallast, Jürgen Sültenfuß, Axel Schmidt, and Christian Siebert

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Cited articles

Ad-Hoc-AG Hydrogeologie: Regional Hydrogeology of Germany: Aquifers in Germany, their distribution and properties, Geol. Jb., A 163, 456, 2016. 
Aeschbach-Hertig, W., Peeters, F., Beyerle, U., and Kipfer, R.: Interpretation of dissolved atmospheric noble gases in natural waters, Water Resources Research, 35, 2779–2792, 1999. 
Appelo, C. A. J. and Postma, D.: Geochemistry, groundwater and pollution (rev. ed.): Rotterdam, Netherlands, CRCPress/Balkema, 536 p., 1996. 
Benettin, P., Volkmann, T. H. M., von Freyberg, J., Frentress, J., Penna, D., Dawson, T. E., and Kirchner, J. W.: Effects of climatic seasonality on the isotopic composition of evaporating soil waters, Hydrol. Earth Syst. Sci., 22, 2881–2890, https://doi.org/10.5194/hess-22-2881-2018, 2018. 
Bourke, S. A., Iwanyshyn, M., Kohn, J., and Hendry, M. J.: Sources and fate of nitrate in groundwater at agricultural operations overlying glacial sediments, Hydrol. Earth Syst. Sci., 23, 1355–1373, https://doi.org/10.5194/hess-23-1355-2019, 2019. 
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Short summary
Groundwater in agricultural regions can transport nutrients and contaminants into rivers, affecting water quality. This study examines nutrient flux in the German Elbe River using multi-environmental tracers. Groundwater takes a few decades to reach the river, mostly infiltrating after 1985. This means that massive nutrient inputs from past fertilization have peaked and will decline in the future. These findings guide management strategies to reduce eutrophication and protect aquatic ecosystems.
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