The sea region data series are calculated as the average of annual mean data from 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. There were no stations with consistent data series on BOD7 in rivers draining to the Arctic Ocean. BOD7 data has been recalculated into BOD5 data.
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).
Sign up to receive our reports (print and/or electronic) and quarterly e-newsletter.
Use bicycle couriers!
If you run a business and need to deliver mail and parcels regularly around town, use a bicycle courier service if one is available. Bicycles bypass traffic; are quick; and you will contribute to the improvement of urban air quality in your area.
More green tips