Nitrate concentrations in rivers between 1992 and 2011 in different sea regions of Europe.

Figure Created 29 Aug 2013 Last modified 03 Sep 2013
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The sea region data series are calculated as the average of annual mean concentrations for river monitoring stations in each sea region. The data thus represents rivers or river basins draining into that particular sea. Only complete series after inter/extrapolation are included (see indicator specification). The number of river monitoring stations included per sea region is given in parentheses.

European data


Additional information

Arctic Ocean (13)    
Baltic Sea (373)    
Black Sea (143)    
Celtic Seas, Bay of Biscay, Iberian Coast (169)    
Greater North Sea (397)    
Mediterranean Sea (132)    

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European Environment Agency (EEA)
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