Biochemical Oxygen Demand (BOD5) and total ammonium concentrations in rivers between 1992 and 2006

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Created : Nov 12, 2009 Published : Jul 09, 2008 Last modified : Nov 29, 2012 11:35 AM

Topics: Water ,

Between 1992 and 2006, BOD5 decreased from 5 to 2 mg O2/l

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Sep 07, 2012 - Biochemical Oxygen Demand (BOD5) and total ammonium concentrations in rivers between 1992 and 2010

Metadata

Last upload:

17 Sep 2008

Dynamic

Temporal coverage:

1992-2006

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Geographical coverage:

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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 (http://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).

Owners:

European Environment Agency (EEA)

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Figure type:

Graph

Additional information

Ammonium declined from 800 to 300 ¼g N/l. Number of river monitoring stations included in analysis noted in brackets. BOD5 data from Albania, Austria, Belgium, Bulgaria, Czech Republic, Denmark, France, Hungary, Ireland, Luxembourg, FYR of Macedonia, Poland, Slovakia, Slovenia, Spain and United Kingdom. BOD7 data from Finland, Estonia, Latvia (1996-2001) and Lithuania (1996-2005). BOD7 data were recalculated into BOD5 data. Total ammonium data from Albania, Austria, Belgium, Bulgaria, Denmark, Estonia, Finland, France, Germany, Hungary, Ireland, Latvia, Lithuania, Luxembourg, FYR of Macedonia, Netherlands, Norway, Poland, Slovenia, Spain, Sweden and United Kingdom. Concentrations are expressed as the station weighted mean of the annual mean concentrations by countries. Stations with time series consisting of minimum seven years are included (see Methodology section for further details). The number of available mean concentrations/stations per year is different, except for Luxembourg and Norway with constant number.