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GIS Map Application WISE SoE Ammonium in Rivers
The map shows the mean annual concentrations of total ammonium (TA) as mg/L N-NH4in European rivers measured at WISE SoE River monitoring stations from 1992 till 2011. All data are annual means. For most countries these are based on measurements over the whole year, but for some countries the annual mean actually represents only the growing season (due to ice cover in winter).The purpose of the map is to provide an overview of the annual concentrations of the total ammonium/ammonium in rivers across Europe and to enable viewer to make comparisons of the values in European countries or individual monitoring sites. NH4 is the empirical formula of the ammonium ion which, in water, is an important nitrogenous fertilizer for aquatic plants. In excess ammonium can give rise to problems because it contributes indirectly to BOD by reducing Dissolved Oxygen concentrations in water. It also forms ammonium hydroxide in water and is extremely toxic to fish and aquatic life at elevated pH levels.Total ammonium concentrations are normally increased as a result of discharges from waste water treatment plants, industrial effluents and agricultural runoff. It exerts a demand on oxygen in water as it is transformed to oxidised forms of nitrogen. In addition it is toxic to aquatic life at certain concentrations in relation to water temperature, salinity and pH. It can also pollute water used for drinking and bathing. In less detailed scale data is aggregated by country and pie charts are displayed. In more detailed scale individual stations appear in shape of triangles. Historical data (from 1992 on) can be displayed and viewed with time slider tool.
Located in Data and maps Interactive maps
GIS Map Application Ammonium in groundwater by countries and WFD gw bodies Mean annual concentrations of Ammonium (NH4) measured at WISE SoE groundwater
The map shows the mean annual concentrations of Ammonium (NH4) measured at WISE SoE groundwater monitoring stations during the period 2000 – 2011. All data are annual means aggregated by countries (visible when the map is zoomed to the scale of 1 : 6 000 001 and less detailed) or by WFD groundwater bodies (visible when the map is zoomed to the scale of 1 : 6 000 000 and more detailed).
Located in Data and maps Interactive maps
Figure Water quality of rivers in six Member States 1980-1999. BOD, phosphorous and ammonium
Located in Data and maps Maps and graphs
Daviz Visualization Ammonium concentrations in rivers in different sea regions of Europe.
Located in Data and maps Data visualisations
Figure Trend in total ammonium (NH4) concentrations and BOD5 in selected WCE rivers (1992-2004)
Numbers of river monitoring stations in brackets
Located in Data and maps Maps and graphs
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 Rivers - ammonium
Located in Data and maps Data visualisations
Figure Annual average concentrations of ammonium N measurements at Bimmen / Lobith (Rhine)
Located in Data and maps Maps and graphs
Figure Concentrations of total ammonium, BOD, nitrate, and orthophos-phates in European rivers between 1992 and 2001
Located in Data and maps Maps and graphs
Figure Average pollution concentrations for European rivers
Located in Data and maps Maps and graphs
European Environment Agency (EEA)
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Denmark
Phone: +45 3336 7100