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

XML schema Water Framework Directive 2016 2017-05-22 17:49:31.0
Vocabulary Agricultural products 2017-05-19 18:04:38.0
Vocabulary Crops 2017-05-19 16:35:46.0
Vocabulary Designation type code 2017-05-19 13:44:07.0
Vocabulary Code list for substances to be reported under the E-PRTR Regulation following its Annex 1. 2017-05-18 13:59:26.0
Dataset definition WISE SoE - Water Quality (WISE-4) Thu May 18 13:34:16 UTC 2017
Dataset definition WISE - Spatial Data (WISE-5) Thu May 18 09:40:25 UTC 2017
XML schema MMR Projections 2017-05-10 15:02:43.0
XML schema EU Registry on Industrial Sites 2017-05-04 12:19:24.0
XML schema Implementing Decision 2011/850/EU: AQ info exchange & reporting VERSION 1.0 2017-03-31 09:19:00.0
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



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!