18-Aug-2016: We are testing a new look for Eionet at the Data Dictionary website. The new design takes into account that bigger screens have become the norm. 

10-Apr-2013: The phone number for the Eionet Helpdesk has been retired. The email address is still the same. 

The Data Dictionary contains detailed information on the content, format and structure of each water data set: rivers, lakes, groundwater, transitional, coastal and marine waters, and water quantity.

Latest released definitions

Vocabulary AQD - Air Quality Pollutants 2017-04-28 14:42:33.0
Vocabulary Air pollutants and greenhouse gases 2017-04-28 09:04:26.0
Vocabulary Waste categories 2017-04-27 16:35:04.0
Vocabulary Land cover 2017-04-27 14:34:58.0
XML schema Implementing Decision 2011/850/EU: AQ info exchange & reporting VERSION 1.0 2017-03-31 09:19:00.0
XML schema LCP - Large Combustion Plant Directive - Version 1.1 2017-03-30 06:27:31.0
XML schema MMR Policies and Measures 2017-03-06 16:21:59.0
XML schema Water Framework Directive 2016 2017-02-13 13:35:08.0
Dataset definition Common Database on Designated Areas (CDDA) Wed Dec 21 12:31:57 UTC 2016
Dataset definition Noise Directive Dataflow 3 Thu Dec 15 11:32:18 UTC 2016
Dataset definition Noise Directive Dataflow 2 Thu Dec 15 11:31:40 UTC 2016
Dataset definition Noise Directive Dataflow 1 and 5 Thu Dec 15 11:29:35 UTC 2016



If you experience any problem using data dictionary, please let the Eionet Helpdesk know immediately. The Helpdesk can be reached from Monday through Friday 9:00 to 17:00 CET by email to:

Do not hesitate, we are here to help!