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 Age class 2016-12-09 15:16:40.0
Dataset definition Common Database on Designated Areas (CDDA) Fri Dec 09 14:49:07 UTC 2016
Vocabulary National CDDA designations 2016-12-08 15:19:23.0
Vocabulary Environment indicator 2016-12-08 13:39:00.0
Vocabulary Information society indicator 2016-12-07 16:38:00.0
Dataset definition WISE - Bathing Water Quality Reporting under Directive 2006/7/EC Wed Oct 26 14:17:52 UTC 2016
Dataset definition WISE SoE - Water Quality (WISE-4) Tue Sep 06 13:08:42 UTC 2016
XML schema Schemas for the EMERALD network 2016-08-26 14:23:14.0
XML schema Information on Natura 2000 sites 2016-08-26 14:22:29.0
XML schema Water Framework Directive 2016 2016-08-03 07:25:47.0
Dataset definition Urban Waste Water Treatment Directive reporting under Article 15 Mon Jul 18 09:59:27 UTC 2016
XML schema EU ETS Article 21 questionnaire 1.1.1 2016-06-28 07:44:17.0



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!