Source
Source Contact person/organisation Contact person/organisation Direct source Direct sourceBibliographic citation:
Organisation for Economic Co-operation and Development: Environment Statistics (August 2017 Edition). UK Data Service. https://doi.org/10.5257/oecd/env/2017-08
Data Characteristics Data Characteristics Date last updated Date last updatedAugust 2017
Periodicity PeriodicityAnnual
Other Aspects Other Aspects Other comments Other commentsRivers
Data show water quality of selected rivers. Water quality is measured in terms of annual mean concentrations of dissolved oxygen and BOD; of nitrates, phosphorus and ammonium; and of lead, cadmuim, chromium and copper. The rivers selected are main rivers draining large watersheds in the countries chosen; the measurement locations are at the mouths or downstream frontiers of the rivers. These parameters provide information concerning the state and trends of pollution by organic matter and nutrients, heavy metals and other metals. In reading the data, one should compare trends rather than absolute values, since measurement methods vary by country.
Lakes
Data show trends in annual mean concentrations of phosphorus and nitrogen in selected lakes. These parameters concern nutrient concentrations and related degrees of eutrophication of lakes and reservoirs.
The interpretation of these tables should take into account variations in the methods of sampling (e.g. sampling location and number of measurements at different sampling locations and in different years).
Copyright:
Organisation for Economic Co-operation and Development
Recommended uses and limitations Recommended uses and limitationsBibliographic citation:
Organisation for Economic Co-operation and Development: Environment Statistics (August 2017 Edition). UK Data Service. https://doi.org/10.5257/oecd/env/2017-08
Annual
August 2017
Rivers
Data show water quality of selected rivers. Water quality is measured in terms of annual mean concentrations of dissolved oxygen and BOD; of nitrates, phosphorus and ammonium; and of lead, cadmuim, chromium and copper. The rivers selected are main rivers draining large watersheds in the countries chosen; the measurement locations are at the mouths or downstream frontiers of the rivers. These parameters provide information concerning the state and trends of pollution by organic matter and nutrients, heavy metals and other metals. In reading the data, one should compare trends rather than absolute values, since measurement methods vary by country.
Lakes
Data show trends in annual mean concentrations of phosphorus and nitrogen in selected lakes. These parameters concern nutrient concentrations and related degrees of eutrophication of lakes and reservoirs.
The interpretation of these tables should take into account variations in the methods of sampling (e.g. sampling location and number of measurements at different sampling locations and in different years).
Copyright:
Organisation for Economic Co-operation and Development