Figure

Biochemical oxygen demand and ammonium in European rivers

Figure Created 22 Mar 2022 Published 24 Mar 2022 Last modified 30 Nov 2022

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Topics: Water and marine environment Biodiversity — Ecosystems

This page was archived on 30 Nov 2022 with reason: Other (New version data-and-maps/figures/biochemical-oxygen-demand-and-ammonium-1 was published)

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Methodology:: The data series are calculated as the average of annual mean concentrations for river sites in Europe. Only complete time series after inter/extrapolation are included (see indicator Methodology section).
BOD7 data has been recalculated into BOD5 data.
Units:: Left chart: mg O₂/l
Right chart: µg NH₄-N/litre
Rights:: EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (https://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).
Owners:: European Environment Agency (EEA)
Processors:: Norwegian Institute for Water Research (NIVA)
Figure type:: Graph

Additional information

The geographical coverage is the 38 EEA member countries plus the United Kingdom, but only complete time series are included in the analysis.

The data series are calculated as the average of annual mean concentrations for river sites in Europe. Only complete time series after inter/extrapolation are included (see indicator specification). BOD7 data have been recalculated into BOD5 data. 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:

1992-2019: Albania (4), Austria (44), Belgium (26), Bulgaria (58), Czechia (19), Estonia (38), Finland (5), Ireland (3), Latvia (13), Lithuania (22), North Macedonia (4), Slovakia (8), Slovenia (8), Spain (76), Sweden (1), United Kingdom (25).
2000-2019: Albania (5), Austria (46), Belgium (36), Bulgaria (75), Croatia (23), Cyprus (4), Czechia (19), Estonia (40), Finland (5), Ireland (52), Italy (44), Latvia (16), Lithuania (22), North Macedonia (8), Poland (92), Romania (88), Serbia (34), Slovakia (8), Slovenia (10), Spain (165), Sweden (1), United Kingdom (25)

Right chart:

Ammonium in rivers: The number of river monitoring sites included per country is given in parenthesis:
1992-2019: Albania (4), Austria (30), Belgium (20), Bulgaria (39), Estonia (38), Finland (63), France (161), Germany (119), Ireland (4), Latvia (13), Lithuania (21), North Macedonia (5), Norway (44), Slovenia (9), Spain (22), Sweden (111), United Kingdom (13).
2000-2019: Albania (8), Austria (46), Belgium (23), Bulgaria (58), Croatia (23), Estonia (40), Finland (72), France (239), Germany (122), Iceland (1), Ireland (33), Italy (25), Latvia (16), Lithuania (22), North Macedonia (18), Norway (44), Poland (4), Romania (89), Serbia (34), Slovenia (11), Spain (52), Sweden (113), United Kingdom (13)

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Geographic coverage

Albania Austria Belgium Bosnia and Herzegovina Bulgaria Croatia Cyprus Czechia Denmark Estonia Finland France Germany Greece Hungary Iceland Ireland Italy Kosovo Latvia Liechtenstein Lithuania Luxembourg Malta Montenegro Netherlands North Macedonia Norway Poland Portugal Romania Serbia Slovakia Slovenia Spain Sweden Switzerland Turkey United Kingdom