Standing Committee on Hydrological Services

The Standing Committee on Hydrological Services (SC-HYD) is leading activities of WMO in services aspects of operational hydrology and water resources management. The SC-HYD is composed of technical experts, including the Chair (Dr Yuri Simonov) and Vice-chairs (Eng. Marcelo Uriburu Quirno and Ms Milica Djordjevic), selected from the WMO Expert Network by the President of the Commission. Other technical experts may be invited, on a needs basis, to serve as Observers on the SC-HYD as determined by the chair/vice-chair of SC-HYD in consultation with the president of the Services Commission.

Rhin waterfall - by Nirina Ravalitera

Working Structure
See a current list of our experts and our Terms of Reference in the Contacts Directory.
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Working groups

Group picture Third Meeting Standing Committee on Hydrological Services - SC-HYD 3
SC-HYD Milestones
The SC-HYD articulates its workplan in 36 milestones. During 2025, seven of these milestones were decided to be placed on hold (Refrigerated) and three were reduced in scope. The SC-HYD will be working until the next ordinary session of the Commission for Services (SERCOM) where, if required, the Standing Committee can be re-established at the discretion of the Commission for Services (SERCOM). The work of SC-HYD is done in coordination with the Hydrology and Cryosphere activities of WMO.

Related publications

Cover of the "State of Global Water Resources 2024 Report" showing a glacier melting.
State of Global Water Resources 2024, WMO-No. 1380
Cover of the "Guidelines on the Verification of Hydrological Forecasts, 2025 edition" by the World Meteorological Organization, featuring a green abstract design.
Guidelines on the Verification of Hydrological Forecasts (WMO-No.1364)
Cover of a World Meteorological Organization publication on guidelines for flood forecasting and early warning systems inventory, 2023 edition
Guidelines on the Inventory of Interoperable Models and Platforms for Flood Forecasting and Early Warning Systems (WMO-No.1345)
Cover of the "Guidelines on Seasonal Hydrological Prediction" 2021 edition by the World Meteorological Organization.
WMO Guidelines on Seasonal Hydrological Prediction (WMO-No.1274)
Cover of a publication titled "Technical Regulations: Basic Documents No. 2, Volume III – Hydrology," 2021 edition by the World Meteorological Organization.
Technical Regulations, Volume III – Hydrology WMO-No. 49
Cover of the "Guide to Hydrological Practice, Volume I" by the World Meteorological Organization, 2008 edition, updated in 2025.
Guide to Hydrological Practice, Volume I Hydrology – From Measurement to Hydrological Information WMO-No. 168
Cover of "Guide to Hydrological Practices, Volume II: Management of Water Resources and Application of Hydrological Practices," published by the World Meteorological Organization.
Guide to Hydrological Practices, Volume II Management of Water Resources and Applications of Hydrological Practices WMO-No. 168

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