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Figure D source code Biochemical Oxygen Demand (BOD5) and total ammonium concentrations in rivers between 1992 and 2008
Concentrations are expressed as the average of annual mean concentrations. Up to 3-year gaps of missing values have been interpolated or extrapolated. Only complete series with no missing values after this interpolation/extrapolation are included. Number of river monitoring stations included in analysis per country is noted in brackets. BOD7 data has been recalculated into BOD5 data.
Located in Data and maps Maps and graphs
Daviz Visualization Nitrogen emission intensity of agriculture
Located in Data and maps Data visualisations
Daviz Visualization D source code Changes in Nitrogen balance and GVA of agriculture
Located in Data and maps Data visualisations
Figure Water exploitation index (WEI) — in late 1980s/early 1990s (WEI‑90) compared to latest years available (1998 to 2007)
WEI: annual total water abstraction as a percentage of available long-term freshwater resources.
Located in Data and maps Maps and graphs
Indicator Assessment Nutrients in freshwater (CSI 020) - Assessment published Dec 2010
Average nitrate concentrations in European groundwaters increased from 1992 to 1998, and have remained relatively constant since then. The average nitrate concentration in European rivers decreased by approximately 9 % between 1992 and 2008 (from 2.4 to 2.2 mg/l N), reflecting the effect of measures to reduce agricultural inputs of nitrate. Average orthophosphate concentrations in European rivers have decreased markedly over the last two decades, being almost halved between 1992 and 2008 (47 % decrease). Also average lake phosphorus concentration decreased over the period 1992-2008 (by 26%), the major part of the decrease occurring in the first half of the period. The decrease in phosphorus concentrations reflect both improvement in wastewater treatment and reduction in phosphorus in detergents. Overall, reductions in the levels of freshwater nutrients over the last two decades primarily reflect improvements in wastewater treatment. Emissions from agriculture continue to be a significant source.
Located in Data and maps Indicators Nutrients in freshwater
Figure Present concentration of total ammonium (µg N/l) in rivers in European countries
Located in Data and maps Maps and graphs
Figure Present concentration of total ammonium (µg N/l) in rivers in European countries
Located in Data and maps Maps and graphs
Figure Present concentration of total ammonium (mg N/l) in rivers in European countries
Number of river monitoring stations included in analysis noted in brackets
Located in Data and maps Maps and graphs
Figure Octet Stream Frequency distribution of concentration of total ammonium (mg N/l) in rivers in European countries, 2006 or the latest year with available data
Number of river monitoring stations included in analysis noted in brackets
Located in Data and maps Maps and graphs
Figure Water exploitation index (WEI) (total water abstraction per year as percentage of long-term freshwater resources in 1990 and 2002/2004)
The diagram illustrate per country WEI in 1990 and 2002/04
Located in Data and maps Maps and graphs
European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100