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Conservation status of habitat types of European Union interest in lake and river ecosystems: Statistics by region on the left, overall statistics on the right.
Located in Data and maps › Maps and graphs
Biochemical Oxygen Demand (BOD5) and total ammonium concentrations in rivers between 1992 and 2010: Concentrations are expressed as annual mean concentrations. Only complete series after inter/extrapolation are included (see indicator specification). The number of river monitoring stations included per country is given in metadata (see downloads and more info). BOD7 data has been recalculated into BOD5 data.
Located in Data and maps › Maps and graphs
Oxygen consuming substances in rivers (CSI 019) - Assessment published Oct 2012: Concentrations of BOD and total ammonium have decreased in European rivers in the period 1992 to 2010 (Fig. 1), mainly due to general improvement in wastewater treatment. See also WISE interactive maps: Mean annual BOD in rivers and Mean annual Total Ammonium in rivers
Located in Data and maps › Indicators › Oxygen consuming substances in rivers
Total ammonium concentrations in rivers between 1992 and 2010 in different geographical regions of Europe: The data series per region are calculated as the average of the annual mean for river monitoring stations in the region. Only complete series after inter/extrapolation are included (see indicator specification). The number of river monitoring stations included per geographical region is given in parentheses.
Located in Data and maps › Maps and graphs
Nitrate concentrations in rivers between 1992 and 2010 in different geographical regions of Europe.: The data series per region are calculated as the average of the annual mean for river monitoring stations in the region. Only complete series after inter/extrapolation are included (see indicator specification). The number of river monitoring stations included per geographical region is given in parentheses
Located in Data and maps › Maps and graphs
Ecoregions for rivers and lakes: Ecoregions are based on fauna living in European inland waters
Located in Data and maps › Datasets
Country profile - Societal developments (Latvia): SOER Country profile from Latvia
Located in The European environment – state and outlook 2010 › Country assessments › Latvia
Nitrate concentrations in rivers between 1992 and 2008 in different sea regions of Europe.: 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). Two regions are not shown in the figure due to a lack of data (Barents Sea: 1 station, Norwegian Sea: 2 stations); these stations have NO3 concentrations below 0.8 mg/l N.
Located in Data and maps › Maps and graphs
Total ammonium concentrations in rivers between 1992 and 2008 in different geographic regions of Europe: 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 and region is noted in brackets.
Located in Data and maps › Maps and graphs
European river catchments - poster: This poster shows the dataset European River Catchments (ERC) and the water lines of EuroGlobalMap
Located in Data and maps › Maps and graphs