River inputs | Central Portal
River Inputs Challenge


The aim of the River Inputs Challenge is to produce, for each major river bordering the North Sea basin, a time series of annual inputs to the basin from those rivers, and monthly averages, maxima and minima for:

  • Water
  • Sediment
  • Total Nitrogen
  • Phosphates
  • Salmon, and
  • Eels.


The data identification phase has been completed and all information is currently being pursued. All information available from online sources has been gathered, and relevant national agencies have been contacted for further information.  The collected information has been catalogued and compiled and is awaiting analysis. The work will build on previous data reviews to provide an updated consideration of what data is available. Metadata will be stored and quality checking will be carried out to determine, as far as possible, the accuracy and consistency of the data.