Raum Zehren

Map <span lang="de" class="language">Raum Zehren</span>
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Transition area between the upper and middle courses of the river Elbe

The sub-area is located in the transition area between the headwaters and the middle Elbe. The river runs through the landscape of the Saxon hill country and the foreland of the Erzgebirge (Ore Mountains).

This section of the Elbe is straightened and reinforced by coarse gravel. No transverse structures or barrages obstruct the waterway.

The sub-area Raum Zehren reflects the water pollution caused by the city of Dresden.

Sampling site

Zehren (km 96) Northernmost sampling site of the German upper course of the river Elbe


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
Per- and polyfluoroalkyl compounds Organic compounds which are fully (per-) or partially (poly-) fluorinated
Polycyclic musks Class of synthetic fragrances
Stable Isotopes Atoms of one element with different weights
Supplementary parameters Additional information for the interpretation of contamination data

Sampling period

1993 - 2019