The course organised by the IAHR/WMO/IAHS Working Group on Hydrometry Training Course took place during the River Flow 2024 conference in Liverpool, UK from 31 August to 2 September 2024.

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Since 2011, the international IAHR/WMO/IAHS training course on stream gauging has been organized in six countries around the world by recognized hydrometry experts. The three-day course consists of lectures covering topics including field operations (gauging station, discharge measurements), data management (rating curves, uncertainty estimation, data review) and field exercises. The course is designed for students, academics and professional hydrologists who want to gain a clear picture of both classic and innovative hydrometry technologies, and get involved in the international community of hydrometry experts.

The 7th course was held from 31 August to 2 September in Liverpool, UK, with 33 participants coming from 13 countries around the world, both students and professionals, including staff from the national hydrological service of England (Environment agency) and Scotland (SEPA).

The general programme included:

• Day 1 - Lectures on hydrometric field measurements (gauging station, stream gauging, measurement quality and uncertainty).

• Day 2 - Hands-on exercises in the field (visit of a hydrometric station, discharge measurements using conventional and innovating techniques: ADCP, radar and image velocimetry, salt dilution, weir equation, low-cost streamgauging ruler).

  Day 3 - Discharge computation and hydrometric data management: rating curves, hydrographs, data QA/QC, uncertainty analysis and publication.

The international speakers and teachers were:

• Alexandre Hauet (EDF and Grenoble Alpes University, France)

• Marian Muste (IIHR, Iowa University, USA)

• Dongsu Kim (Dankook University, Seoul, Korea)

• Olly Baldwyn (Environment Agency, UK)

• Jérôme Le Coz (INRAE, France)

Experts from the National Hydrometry Team (Olly Baldwyn, Andrew Shaw, Rebecca Brown, Dan Hulme UK Environment Agency) have been instrumental for the success of the course: selection of the adequate site for field training, presentation of the national hydrological service, field operations and instrumentation.

Benoît Camenen (INRAE) and commercial sponsors (Fathom, Sommer, Teledyne RDI, vortex-IO, SEBA) actively contributed to the field training.

The Local organising committee of the IAHR RiverFlow 2024 conference (Iacopo Carnacina helped by Tricia Waterson, Anna Hodgkinson, Manolia Andredaki) brought a huge support for the practical organization of the course: venue, rooms, catering, registration, budget, coach rental, etc.

The course would not have been possible without the appreciated financial and technical support of commercial sponsors. Most of them attending the event, presenting their products in the room and in the field, which added a significant value to the course:

• Jean-Christophe Poisson (vortex-io)

• William Castaings (Tenevia)

• Kevin Grangier (Teledyne RDI Europe)

• Issa Hansen (Seba)

• Joan Petringer (Paratronic)

• Rob Thomson (SonTek / Xylem)

• Gabe Sentlinger (Fathom)

• Christoph Sommer (Sommer)

The international steering committee of the IAHR/WMO/IAHS training course on stream gauging is deeply grateful to all the people that helped and made this 7th course possible and successful.

Thank you!

J. Le Coz, A. Hauet (13/09/2024)