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Workshop Low flows and droughts

September 25, 2007 to September 26, 2007
General

Background

Drought is considered a major natural hazard affecting large areas and millions of people every year. It is a regularly recurring phenomenon with strong environmental and socio-economic impacts. The decade 1996-2005 was globally the warmest since systematic monitoring started in 1850. According to the latest information, global warming will continue and as a result the hydrological cycle is expected to intensify. The hydrological prospects for summer periods, however connected to uncertainties, indicate more frequent low flows and stream flow droughts in the Rhine basin. The recent occurrence of severe and prolonged drought conditions in various regions of Europe and throughout the world has again emphasized the need for in-depth research on the causes as well as the environmental and socio-economic impact of drought. Appropriate tools for drought alert, monitoring and assessment are urgently needed. Such information is essential to manage and implement adequate mitigation and adaptation strategies.

Objectives

  • To exchange knowledge about historic low flow and drought periods.
  • To discuss local and regional analysis methods of low flow and drought indices and related processes.
  • To exchange knowledge about seasonal weather prediction and low flow forecasts.
  • To exchange knowledge about the influence of climate variability and climate change on future low flow and drought periods.
  • To discuss decision-making procedures, the role of stakeholders and the public.
  • To detect research deficits.

The International Commission for the Hydrology of the Rhine Basin (CHR) has invited scientists, decision makers and stakeholders in the field of low flow and drought management to discuss these issues during a two-day workshop.

Structure and workshop themes

The workshop was divided in three plenary working sessions:

Theme 1: Observed low flow and drought periods

Keywords:

At site and regional indices
Case studies
Data quality

Theme 2: Impact of climate change on low flow and drought

Keywords:

Recent developments in climate scenarios
Effects on the hydrological cycle
Effects on water user functions

Theme 3: Management and adaptation strategies

Keywords:

Seasonal predictions and real-time forecasts (incl. water temperature)
Prediction at ungauged sites
Risk and crisis management
The role of stakeholders and the public in decision-making procedures

Organisers

The invitation to the event was issued by the International Commission for the Hydrology of the Rhine Basin (CHR) in cooperation with UNESCO IHP Paris and the German IHP/HWRP Secretariat.

Language

Working language of the workshop was English. 

Location
Wasser- und Schifffahrtsdirektion Süd Conference room 'Donausaal'
Wörthstrasse 19 97082
Würzburg
Germany
Downloads

bookofabstracts2007.pdf

AttachmentSize
Book of abstracts(2.49 MB)
Programme and timetable

logo Unesco

logo IHP

Day 1 - 25 September 2007

Registration: from 08.30 a.m.

09.00 Welcome by Prof. Dr. Manfred Spreafico, president of CHR
09.15 Keynote by Lena M. Tallaksen, Department of Geosciences, University of Oslo: Key aspects of low flow and droughts

Theme block 1: Observed low flow and drought periods

Chair: Hans Moser / Rapporteur: Caroline Kan

10.00 - 10.30 At site and regional indices of low flow and drought periods: Walter Finke, Federal Institute of Hydrology, Koblenz
10.30 - 11.00 Low flow conditions in the Rhine basin - Developments in the 20th century: Jörg U. Belz, Federal Institute of Hydrology, Koblenz
11.00 - 11.30 Tea/Coffee - Posters
11.30 - 12.00 The low flow period of 2003 in Austria: Franz Nobilis, University Vienna
12.00 - 12.30 Meteorological conditions leading to the hydrological droughts in Central Europe - Three case studies: 2003, 2005 and 2006: Bruno Rudolf, German Weather Service, Offenbach
12.30 - 13.15 Discussion of theme 1
13.15 - 14.30 Lunch

Theme block 2: Impact of climate change on low flow and drought

Chair: Siegfried Demuth / Rapporteur: Peter Krahe

14.30 - 15.00 Recent developments in climate scenarios in The Netherlands: Bart van den Hurk, Royal Dutch Meteorological Institute, De Bilt
15.00 - 15.30 Effects of climate change and climate variability on hydrology: Jaap Kwadijk, WL | Delft Hydraulics
15.30 - 16.00 2 min. oral poster presentations
16.00 - 16.30 Tea/Coffee - Posters
16.30 - 17.00 Effects of climate change and climate variability on water user functions: Joergen E. Olesen, University of Aarhus - Department of Agroecology and Environment
17.00 - 17.30 Effects of climate change and climate variability for the delta area of the River Rhine: Vincent Beijk, RWS RIZA Institute for Inland Water Management and Waste Water Treatment, Rotterdam
17.30 - 18.15 Discussion of theme 2
19.30 Participants' dinner

Day 2 - 26 September 2007

Theme block 3: Management and adaptation strategies

Chair: Henk Wolters / Rapporteur: Gabriele Müller

09.00 - 09.30 Developments in seasonal to decadal predictions: Daniela Jacob, Max-Planck-Institute for Meteorology, Hamburg
09.30 - 10.00 Low flow estimation at ungauged sites: Günter Blöschl, Technical University Vienna
10.00 - 10.30 Operational low flow forecasts: Silke Rademacher, Federal Institute of Hydrology, Koblenz
10.30 - 11.00 Tea/Coffee - Posters
11.00 - 11.30 Predicting low flows - so what?: Undala Alam, Cranfield University, Centre for Water Science
11.30 - 12.00 The seven rules for hydrologists wanting to make an impact on water management, Erik Mostert, Technical University Delft - Centre for Research on River Basin Administration, Analysis and Management
12.00 - 12.30 Discussion of theme 3
12.30 - 13.00 Summary and conclusions of the workshop
13.00 Closing of the workshop
13.15 Lunch 

Evening event

Participants' dinner near the conference centre on 25 September at 19.30 pm

Coordinating Committee

Hans Moser (chair)
Federal Institute of Hydrology
Postfach 200253
D-56002 Coblence
Tel. 0049-261-1306 5303
moser@bafg.de

Jörg Belz
Federal Institute of Hydrology
Postfach 200253
D-56002 Coblence
Tel. 0049-261-1306 5428
belz@bafg.de

Siegfried Demuth
UNESCO - Division of Water Science
1, rue Miollis
F-75732 Paris
Tel. 0033-14568-3996
s.demuth@unesco.org

Gregor Laaha
University of Natural Resources and Applied Life Sciences, BOKU Vienna
Gregor-Mendel-Strasse 33
A-1180 Vienna
Tel. 0043-1-47654 5066
gregor.laaha@boku.ac.at

Caroline Kan
Federal Office for the Environment
CH-3003 Bern
Tel. 0041-31-3230322
caroline.kan@bafu.admin.ch

Henk Wolters
Rijkswaterstaat - RIZA
P.O. Box 17
NL 8200 AA Lelystad
Tel. 0031-320-298322
henk.wolters@rws.nl

Eric Sprokkereef
Secretariat CHR
P.O. Box 9072
NL-6800 ED Arnhem
Tel. 0031-26-3688367
eric.sprokkereef@rws.nl

Participants
NAME ORGANISATION
Alam, Undala Z. Centre for Water Science, Cranfield University, UK
Beijk, Vincent Rijkswaterstaat RIZA, Rotterdam, Netherlands
Belz, Jörg U. Federal Institute of Hydrology, Koblenz, Germany
Blöschl, Günter TU Wien, Institut für Wasserbau und Ingenieurhydrologie, Austria
Bolius, David Agroscope Reckenholz Tänikon, Zürich Switzerland
Brahmer, Gerhard Hessisches Landesamt für Umwelt und Geologie, Wiesbaden, Germany
Bundi, Ulrich EAWAG, Dübendorf, Switzerland
Claessen, Frans Rijkswaterstaat RIZA, Lelystad, Netherlands
Cullmann, Johannes Secretariat IHP/HWRP, Federal Institute of Hydrology, Koblenz, Germany
Demuth, Siegfried UNESCO Division of Water Sciences, Paris, France
Finke, Walter Federal Institute of Hydrology, Koblenz, Germany
Görgen, Klaus Centre de Recherche Public - Gabriel Lippmann, Luxemburg
Haag, Ingo Consulting Engineers Dr-Ing. Karl Ludwig, Karlsruhe, Germany
Hanspach, Alexa Potsdam Institute for Climate Impact Research, Potsdam, Germany
Hirschi, Martin Institute for Atmospheric and Climate Science, ETH Zürich Switzerland
Holzschuh, Robert Kanton Thürgau Amt für Umwelt, Frauenfeld, Switzerland
Hunger, Martin Institute of Physical Geography, University of Frankfurt, Germany
Hurk, Bart van den Royal Dutch Meteorological Institute, De Bilt, Netherlands
Jacob, Daniela Max-Planck-Institute for Meteorology, Hamburg, Germany
Jaskula, Aleksandra Ministry of Transport and Water Management. Rijkswaterstaat Limburg, Maastricht, Netherlands
Kan, Caroline Federal Office for the Environment, Bern, Switzerland
Kielen, Neeltje Rijkswaterstaat RIZA, Rotterdam, Netherlands
Kleinhans, Alexander Bayerisches Landesamt für Imwelt, Hof, Germany
Krahe, Peter Federal Institute of Hydrology, Koblenz, Germany
Kwadijk, Jaap WL Delft Hydraulics, Delft, Netherlands
Menzel, Lucas Center for Environmental Systems Research, University of Kassel, Germany
Moser, Hans Federal Institute of Hydrology, Koblenz, Germany
Mostert, Erik Centre for Research on River Basin Administration, Analysis and Management, TU Delft, Netherlands
Müller Gabriele Bundesministerium für Land- und Forstwirtschaft, Umwelt und Wasserwirtschaft, Vienna, Austria
Nilson, Enno Federal Institute of Hydrology, Koblenz, Germany
Nobilis, Franz University Vienna, Austria
Olesen, Jörgen E. University of Aarhus, Department of Agroecology and Environment, Denmark
Perrin, Charles Cemagref, Antony, France
Rademacher, Silke Federal Institute of Hydrology, Koblenz, Germany
Ruch, Christophe Joanneum Research, Graz, Austria
Rudolf, Bruno German Weather Service, Offenbach, Germany
Rutten, Martine Delft University of Technology, Netherlands
Schatzl, Robert Amt der Steyermärkischen Landesregierung, Graz, Austria
Spreafico, Manfred Federal Office for the Environment, Bern, Switzerland
Sprokkereef, Eric Secretariat CHR, Lelystad, Netherlands
Stokkermans, Hans Rijkswaterstaat East Netherlands, Arnhem, Netherlands
Strigel, Gerhard Secretariat IHP/HWRP, Federal Institute of Hydrology, Koblenz, Germany
Tallaksen, Lena M. University of Oslo, Department of Geosciences, Norway
Terlou, Alberty Secretariat CHR, Lelystad, Netherlands
Valk, Michael van der CrossVision Digital Communication, Amsterdam, Netherlands
Willems, Winfried Institute for Applied Water Resources Management and Geoinformatics, Ottobrunn, Germany
Wolters, Henk Rijkswaterstaat RIZA, Lelystad, Netherlands
Zwolsman, Gertjan Kiwa Water Research, Nieuwegein, Netherlands
Presented posters
David Bolius - Agroscope Reckenholz Tänikon, Switzerland The prediction of soil moisture using probabilistic monthly weather forecasts
Martijn Booij - University of Twente, Netherlands Extreme value statistics for meteorological drought at different spatial and temporal scales in the Meuse basin (not available as pdf)
Ingo Haag, Consulting Engineers Dr-Ing. Karl Luwdig, Germany Daily discharge forecasting with operational water-balance models
Alexa Hanspach, Potsdam Institute for Climate Impact Research, Germany Climatic and anthropogenic effects on low flow of the Middle Elbe
Martin Hirschi, ETH Zürich Switzerland Recent variations in terrestrial water storage: Comparison of GRACE against basin-scale water-balance diagnostics
Aleksandra Jaskula, Rijkswaterstaat Limburg, Netherlands Prioritising water use during drought
Charles Perrin / Cemagref, Antony, France Daily low flow forecasting of the Rhine basin. Comparison of probabilistic strategies
Christophe Ruch / Robert Schatzl - Joanneum Research / Amt der Steiermärkischen Landesregierung, Graz, Austria Low flow forecasting model for the River Mur and comparison of the low flow periods 1992, 1993 and 2003, 2004
Martine Rutten / Delft University of Technology, Netherlands Seasonal statistical forecast of low flow and drought in the River Rhine basin (not available as pdf)
Marcel de Wit / Rijkswaterstaat RIZA, Netherlands Impact of climate change on low flows in the River Meuse
Gertjan Zwolsman - Kiwa Water Research, Netherlands

Water quality of the Rhine river during summer droughts
Poster 1
Poster 2
Poster 3

Slideshow