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Commission for Hydrology

The Commission for Hydrology (CHy) addresses basic hydrological observation networks, water resources assessment, flood forecasting and warning, flood and drought management and adaptability to climate variability and change and promotes the exchange of technology and capacity building.

The outcomes of CHy deliberations provide guidance to WMO Member countries and the WMO Secretariat for the implementation of the Hydrology and Water Resources Programme.

The Commission works on:

  • Integrated hydrological networks
  • Hydrological forecasting and prediction systems
  • Hydrological aspects of natural disasters and environmental issues
  • Assessment of water availability and use
  • Latest advances in hydrological technology

The Commission has a focus on practical implementation of Integrated Water Resource Management (IWRM) principles, with particular attention to integrated flood management and integrated drought management. Information produced by the Commission is incorporated into technical standards, reports, manuals and guidelines that are used by National Hydrological Services in their work.

To enhance the capacity of the Commission on Hydrology to respond to the needs of WMO Members the World Meteorological Congress at its thirteenth session (1999) revised the Commission's terms of reference.

The new terms of reference shifted the focus of the CHy activities from regulation and standardization of methods, instruments of observation and data exchange towards a broader approach to hydrology and water resources problems in the context of socio-economic development and environmental protection – sustainable development.

New emphasis has been put on international exchange of experience and technology, international dissemination of hydrological information, forecasts and warnings, and on raising the public awareness of the social, economic and environmental significance of water.


50 Years of the Commission for Hydrology

The Commission for Hydrology was formally established with Max Kohler as its first President in September 1959. With its first session organized in 1961, the Commission met for its fourteenth session in November 2012 in Switzerland.

Looking back at the first 50 years of the Commission, a special issue of the WMO Bulletin was published. The bulletin provides interesting historical information, from the Commission's troubled birth to the adoption of the subtitle, “Weather, Climate and Water” in 2003. The success of the first 50 years of the Commission has been nurtured by many experts through their diverse contributions.





Hydrology and Water Resources Commission for Hydrology Quality Management Framework - Hydrology Hydrological monitoring and data management Water Resources Assessment Hydrological Forecasting and Prediction Water, Climate and Risk Management Capacity building and training Regional activities Publications Contact


World Meteorological Organization, 7bis, avenue de la Paix, CP No. 2300, CH-1211 Geneva 2, Switzerland - Tel.: +41(0)22 730 81 11 - Fax: +41(0)22 730 81 81
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