Percentage of rivers distributed on water quality classes for BOD (mgO2/l) and orthophosphate (mg/l) in 2001 (1997 for Netherlands)

Figure Created 12 Nov 2009 Published 12 Nov 2009 Last modified 22 Feb 2017, 02:45 PM
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European data

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European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100