International Association of Hydrological Sciences Association Internationale des Sciences Hydrologique


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Due to COVID-19 please view the IAHS calendar for up to date event information

Dates: 01/08/2021 - 31/12/2021 00:00

ATTENTION Due to the particular circumstances of the ongoing COVID-19 outbreak, many events have been cancelled or postponed. We monitor and display these changes on the IAHS Calendar webpage.
4th International Conference on the Status and Future of the World’s Large Rivers

Dates: 02/08/2021 - 06/08/2021
Location: Moscow, Russia

The World’s Large Rivers Conference aims in providing a global forum for a wide-ranging discussion of key issues related to research on large rivers and to their effective and sustainable management, involving both scientists and decision makers. We encourage scientists and practitioners to present their research results and experiences in the fields of

Hydrology, Hydraulics & Hydroclimatic Impacts
Sediment Transport & River Morphology
River Pollution, Ecology & Restoration
Integrated River Management

as well as in a special session about
Russian / Arctic Rivers

Special focus throughout all sessions will be given this time to Climate Change and River Response. 

This will now be held as a hybrid event from 3rd – 6th of August 2021


Abstract Submission will be open until January 31st 2021.

12th Annual Catchment Science Summer School

Dates: 29/08/2021 - 03/09/2021
Location: University of Birmingham, UK

The 12th Annual Catchment Science Summer School (virtual again this year due to COVID-19) will run Aug 29-Sept 3, 2021 at the University of Birmingham (UK). The course is designed for PhD students and Post Docs in catchment science. The course is taught by Jeff McDonnell, Chris Soulsby, Jan Seibert, Ilja van Meerveld, Doerthe Tetzlaff, David Hannah, Stefan Krause and many others. It is co-sponsored by the Global Institute for Water Security at the University of Saskatchewan, the University of Aberdeen, University of Zurich and Humboldt University. Course details and registration can be found at: . The registration is £200 GBP. Enrollment is limited and is on a first come, first served basis. The class sells out each year so early booking is recommended, if interested.



Dates: 06/09/2021 - 08/09/2021
Location: online

Panta Rhei is organising two sessions, one on the Panta rhei synthesis book, and one on the compilation of Panta Rhei benchmark datasets. Thus, also abstracts to this broader Panta Rhei topics are most welcome. 


Scholarships for Early Career Scientists are available at: 

The conference will be held in hybrid mode (in person and online).


Dates: 16/09/2021 - 17/09/2021
Location: online

STAHY2021, will focus on statistical methods for hydrological applications. This branch of hydrology has a long history, and continues to be an exciting and topical field of research.  STAHY 2021 will be online and with reduced registration fees. 

STAHY2021 will focus on the following topics (but not limited to):

Extreme hydrological and meteorological analysis under global changes
Quantifying uncertainty in hydrological predictions
Hydrological design and risk assessment under changing environment
Applications of big data, data mining and information theory
Data assimilation for hydrological forecasts
New approaches in time series analysis
Spatio-temporal variability and scaling
Geostatistics in groundwater and surface hydrology

Important dates:

·         Abstract submission deadline: June 30, 2021
·         Notification of abstract acceptance:  July 25, 2021
·         Early bird registration deadline: August 31, 2021



This event is eligible for IAHS SYSTA support ( )

European vision for hydrological observations and experimentation

Dates: 20/09/2021 - 23/09/2021
Location: Naples, Italy

Rescheduled from October 2020

Focusing on hydrologic observation, hypothesis driven experimentation, and the models behind the data - participants will initialize a new vision for European hydrologic observation and experimentation. The conference consists of plenary sessions with talks by invited speakers, early career talks and panel discussions with strong involvement of the audience, poster session combined with flash talks, open workshop spaces in form of break out groups concluded by a wrap-up meeting. 

The geoscience excursion is scheduled for 22 September 2021.


2nd International Conference on Natural Hazards and Risks in a changing world 2021

Dates: 06/10/2021 - 07/10/2021
Location: Potsdam, Germany

The hazards include hydrological events (floods and droughts) including risk estimation

For more information please contact Dr. Theresia Petrow  (


Water and nutrient fluxes in ecosystems under a changing climate - a tracer-based perspective

Dates: 11/10/2021 - 12/10/2021
Location: online

Free of charge

The aim of this workshop is to bring together leading scientists from hydrology, soil science and plant physiology to communicate the latest research on water and nutrient fluxes in the soil-plant atmosphere continuum and to identify challenges and ways forward among colleagues from these three neighbouring disciplines. We will have four sessions covering the following topics:

    Transport processes and residence times in ecohydrological systems
    Novel tracer techniques for investigating processes in the subsurface
    Ecohydrological storages and fluxes mediated by plants
    Methodological developments and monitoring systems

For abstract submission please follow the link: 
Abstract submission deadline: 03 September 2021
Registration deadline: 24 September 2021

4th International Conference of the Great Rivers of Africa

Dates: 16/11/2021 - 18/11/2021
Location: Cotonou, Benin

Hydrology of the Major African basins, which will take place in Cotonou in Benin from 16 to 18 November 2021, with a special session on hydrometeorological risks and related topics.


Summary of 3rd international conference on the hydrology of the great rivers of Africa in Algiers from 6 to 8 May 2018 (ALARIC 3).   (in both French and English)

This event is eligible for IAHS SYSTA support. Applications are currently welcomed.

National Hydrology Conference

Start date: 16/11/2021
Location: Hodson Bay Hotel, Athlone, Co. Roscommon

AGU Fall Meeting

Dates: 13/12/2021 - 17/12/2021
Location: New Orleans, USA

IAHS 2022 Scientific Assembly

Dates: 29/05/2022 - 03/06/2022
Location: Le Corum, Montpellier, France

IAHS 2022 Scientific Assembly in Montpellier, France

This important biennial event will provide an opportunity to communicate, exchange and project on all major topics in the hydrological sciences within the framework of sessions organized by all IAHS Commissions and Working Groups with partners.

IAHS 2022 will have three major focuses:

·       Panta Rhei decade (2013-2022) on change in hydrology and society

·       UPH initiative, "Unsolved Problems in Hydrology"

·       the 100th anniversary year of IAHS

This event will be accompanied throughout this week by many other "water-related" events for scientists, the general public and schoolchildren. 

View the Scientific Programme.



IUGG General Assembly

Dates: 11/07/2023 - 20/07/2023
Location: Berlin, Germany

The 28th IUGG General Assembly will take place in Berlin, Germany.

More information available from