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Environmental information systems
Biochemical oxygen demand and ammonium in European Rivers
Chart (static)
This figure shows the trends in biochemical oxygen demand (BOD) and ammonium in European rivers.
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- Waterbase - Water Quality ICM, 2023, European Environment Agency (EEA)
- Albania
- Austria
- Belgium
- Bulgaria
- Croatia
- Cyprus
- Czechia
- Estonia
- Finland
- Germany
- Iceland
- Ireland
- Italy
- Latvia
- Lithuania
- North Macedonia
- Norway
- Poland
- Romania
- Serbia
- Slovakia
- Slovenia
- Spain
- Sweden
1992-2022
Units
Left chart: Milligrams of O2 per litre (mgO2/l)
Right chart: Micrograms of NH4-N per litre (µgNH4-N/l)
Additional information
Two time series are shown – a longer time series representing fewer water bodies and a shorter time series representing more water bodies.
Left chart:
BOD in rivers: The number of river monitoring sites included per country is given in parenthesis:
1992-2022: Albania (4), Austria (1), Belgium (26), Bulgaria (55), Czechia (21), Estonia (33), Finland (5), Ireland (3), Latvia (13), Lithuania (22), North Macedonia (4), Slovakia (8), Slovenia (8), Spain (77).
2000-2022: Albania (5), Austria (1), Belgium (36), Bulgaria (66), Croatia (16), Cyprus (4), Czechia (21), Estonia (35), Finland (5), Ireland (14), Italy (49), Latvia (16), Lithuania (22), North Macedonia (8), Poland (90), Romania (85), Serbia (33), Slovakia (8), Slovenia (10), Spain (168).
Right chart:
Ammonium in rivers: The number of reported river monitoring sites per country is given in parenthesis:
1992-2022: Albania (4), Austria (1), Belgium (20), Bulgaria (37), Estonia (35), Finland (59), Germany (120), Ireland (4), Latvia (12), Lithuania (22), North Macedonia (5), Norway (24), Spain (22), Sweden (108).
2000-2022: Albania (8), Austria (1), Belgium (23), Bulgaria (50), Croatia (16), Estonia (37), Finland (68), Germany (123), Iceland (1), Ireland (28), Italy (30), Latvia (15), Lithuania (22), North Macedonia (17), Norway (24), Poland (4), Romania (87), Serbia (33), Spain (53), Sweden (110).
