1. CIS WG GW – Voluntary Group “Trend in Groundwater”
trenD technical report
B. Lopez; L. GOURCY

2. Last trend technical report versions
13/11/2017 ‘Trend_technical_report_new_V1.docx’
Restructured version
24/11/2017 ‘Trend_technical_report_new_V2.docx’
Focused on chemical trend assessment only – quantitative trend assessment removed
Invitation for case studies contributors to amend their parts with figures or schemes in order to illustrate the applied methods
21/04/2018 ‘Trend_technical_report_new_V3.docx’
New case studies
05/10/2018 ‘Trend_technical_report_new_V4.docx’
Last improvements
V4 = Final version ?
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3. New case studies – last integrations
Wallonia case study
§ Data used
§ Trend calculation
§ Trend reversal assessment: Implementation
References updated (3 references)
Appendix 4: Trend case studies in Wallonia
Slovenian case study
§ Data used
§ Trend calculation
Appendix 5:Trend assessment with STATISTICA software tool in Slovenia
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4. Others improvements circabc links for Technical Reports (§ 1.3)
References to the Guidance No 15 on groundwater monitoring (§ 1.4)
Others minor corrections
General conclusion
Need to be commented and amended
Call for review and proposal 
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5. Next steps Perspectives Validation of the document by e-mail exchanges
Dead-line 30st of November 2018
Perspectives
Second RBMP?
Need for a quantitative trend assessment technical document? As a tool that would be needed in various steps of the GW quantitative status assessment:
- “ensure a balance between abstraction and recharge of groundwater“ (Article 4)
- “The level of groundwater in the groundwater body is such that the available groundwater resource is not exceeded by the long-term annual average rate of abstraction” ( Annex V)
- “the review of the impact of changes in groundwater levels” (2.4 of Annex II)
- “ensure sufficient frequency of measurement to assess the impact of abstractions and discharges on the groundwater level » (2.2.3 of Annex V)
Links with
future main task “Groundwater quantitative status” of the mandate
climate change - global change
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6. CIS country or organisation
Updated list of trend sub-group participants
CIS country or organisation
First name
Surname
RO - Romania
Ruxandra
Balaet
UK - United Kingdom
Tim
Besien
EuroGeoSurveys
Hans Peter
Broers
BE - Belgium
Serge
Brouyere
SK - Slovakia
Robert
Chriaštel
NL - The Netherlands
Jacqueline
Claessens
HU - Hungary
Réka
Gaul
Laurence
Gourcy
AT - Austria
Johannes
Grath
DE - Germany
Falk
Hilliges
PL - Poland (NOT IN CIS LIST)
Anna
Kostka
PL - Poland
Kuczyńska
FR - France
Alexandra
Lequien
NORMAN Network
Benjamin
Lopez
DK - Denmark
Dirk-Ingmar
Müller-Wohlfeil
Katarína
Pilátová
CZ - Czech Republic
Hana
Prchalová
IT - Italy
Elisabetta
Preziosi
LV - Latvia
Inga
Retike
Susie
Roy
Andreas
Scheidleder
DK - Denmark (NOT IN CIS LIST)
Lærke
Thorling Sørensen
DG ENV
Elisa
Vargas Amelin
Ward
CONCAWE
Matthijs
Bonte
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