Data Visualization

Status of biochemical oxygen demand in rivers in European countries

Data Visualization Created 18 Nov 2022 Published 30 Nov 2022 Last modified 30 Nov 2022

1 min read

Topics: Water and marine environment Biodiversity — Ecosystems

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Unit:
Percentage

Additional information:
The geographical coverage is the 38 EEA member countries including Kosovo under UNSC Resolution 1244/99.
The current BOD level per river monitoring site is calculated as the average of available annual mean concentrations for the years 2018-2020. BOD is given as mg oxygen per litre (mg O₂/l).

Methodology:
The river monitoring sites are assigned to different BOD classes to visualise the distribution of data in the dataset. The number of river monitoring sites per country is given in parenthesis.

Sweden, with BOD data for only two sites, is excluded from the chart since the sites may not be representative.

Data sources

Waterbase - Water Quality ICM provided by European Environment Agency (EEA)

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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 (UNSCR 1244/99) Latvia Liechtenstein Lithuania Luxembourg Malta Montenegro Netherlands North Macedonia Norway Poland Portugal Romania Serbia Slovakia Slovenia Spain Sweden Switzerland Turkey