Willby N, Birk S, Poikane S & van de Bund W (2014) Water Framework Directive Intercalibration Manual: Procedure to fit new or updated classification methods to the results of a completed intercalibration. European Commission. JRC Technical Reports. Luxembourg: Publications Office of the European Union. http://publications.jrc.ec.europa.eu/repository/handle/111111111/31100
The European Water Framework Directive (WFD) requires the national classifications of good ecological status to be harmonised through an intercalibration exercise. Most of the Geographical Intercalibration groups have finalized Intercalibration results but many Member States have not joined the group or have not intercalibrated the methods due to some reasons.
Those Member States will have to show that their methods are compliant with the WFD normative definitions and that their class boundaries are in line with the results of the intercalibration exercise.
This document provides a workflow to fit new or revised national classification methods to the harmonised definition of good ecological status established in the completed intercalibration exercise.
The document was drafted by Sebastian Birk (DE), Nigel Willby (UK), Sandra Poikane and Wouter van de Bund (EC Joint Research Centre), with the help of a drafting group consisting Geoff Phillips (UK), Martin Kelly (UK), Libuse Opatrilova (CZ) Jürgen Böhmer (DE) and Marcel van den Berg (NL).
The first version of this document has been circulated to various intercalibration experts and was revised following the comments of Torsten Berg (SE), Paul Logan (UK) and Libuse Opatrilova (CZ). It was agreed at WFD Working Group ECOSTAT meeting 23-24 October 2013.