Upper Rhine

Area situated along the German-Dutch border

The sub-area is located at the Lower Rhine along the German-Dutch border. The whole region is characterized by agriculture. The most important tributaries of the Lower Rhine are the Ruhr and the Lippe. Like the Upper Rhine, also the Lower Rhine is straightened and large sections of the riverbanks are reinforced by rock fills. Moreover, groynes have altered the course of the stream and have lead to vertical erosion. The narrowing of the floodplains by dams has significantly affected the river ecosystem. Only minor sections of the Lower Rhine are still in their natural state. The surroundings are characterized by pastures and grazing land for cattle and sheep.

Sampling site

Bimmen (km 865) At the German-Dutch border


Zebra mussel Common mussel species as invasive animal in rivers and lakes with high information level for water pollution
Bream Bioindicator in rivers and lakes
Suspended particulate matter Fine insoluble mineral or organic particles in the water phase


Metals Eighty percent of all elements on earth are metals
Nonmetals Only eighteen elements in the periodic table
Organometallic compounds Organic substances with at least one metall atom
Chlorohydrocarbons Group of organic compounds with at least one covalently bonded chlorine atom
DDT and metabolites Toxic and persistent organochloropesticide
Hexachlorocyclohexane Several isomeric compounds among the group of chlorinated hydrocarbons
Polycyclic Aromatic Hydrocarbons Group of organic compounds with at least three condensed six-membered rings
Biocides and plant protection products Chemical agents against harmful organisms and for plant protection
Perfluoroalkyl and polyfluoroalkyl substances Persistent organic compounds in which the hydrogen atoms at the carbon skeleton are completely (perfluoroalkyl) or partially (polyfluoroalkyl) substituted by fluorine atoms.
Polycyclic musks Class of synthetic fragrances
Alkylphenol compounds Class of non-ionic surfactants and their degradation products
Stable Isotopes Atoms of one element with different weights
Flame Retardants Flame retardants reduce the flammability of objects
Supplementary parameters Additional information for the interpretation of contamination data

Sampling period

1995 - 2018