News Release

Global early warning system will enable communities to adapt to changing water availability

World Meteorological Organization's HydroSOS initiative will provide regular data on groundwater, river flows, reservoirs, lakes and soil moisture in catchments across the world

Business Announcement

UK Centre for Ecology & Hydrology


image: HydroSOS will provide regular hydrological data, thereby informing more effective and sustainable management of water resources. view more 

Credit: None needed.

More than two billion people face severe water shortages and a similar number have been affected by flooding over the past 20 years, with these challenges expected to rise in coming years due to climate change, growing populations and increased economic activity. Therefore, a global initiative led by the World Meteorological Organization (WMO) and coordinated by the UK Centre for Ecology & Hydrology (UKCEH) will enable communities across the world to better adapt to our changing water cycle.

The Hydrological Status and Outlook System (HydroSOS) will provide regular data on the status of water resources – including groundwater levels, river flows, reservoirs, lakes and soil moisture – in local catchments across the world. It will also assess whether these conditions are normal for the time of year and predict whether the situation is likely to get better or worse over coming weeks and months.

When the system is operational, this detailed information will be distributed by National Hydrological and Meteorological Services (NHMSs) to key sectors such as central and local government, water and energy companies, agriculture and industry, on at least a monthly basis. This will provide an early warning of forthcoming water shortages and flooding, thereby supporting more effective management of public water and energy supplies, guiding farming practices and helping countries prepare for natural disasters, including planning emergency relief efforts.

WMO estimates there may be a 40 per cent gap between global water supply and demand by 2030. Other experts have estimated drought costs up to USD 8 billion a year from losses in agricultural and related businesses, and damage from flooding is USD 80 billion a year.

Elena Manaenkova, Deputy Secretary-General of WMO, says: “HydroSOS will increase communities’ resilience to the impacts of climate change by improving water and food security as well as reducing poverty. Therefore, it is a key initiative in accelerating global progress towards several UN Sustainable Development Goals, particularly SDG6 – Clean Water and Sanitation for All.”

WMO has approved the development of HydroSOS following a five-year pilot project led by UKCEH. This scoped the requirements for the system, drew up guidelines for consistent reporting of hydrological conditions and established there was sufficient international interest in the initiative.

A key feature of the system will be the way in which it supports the development of scientific capacity within hydrological and meteorological organisations around the world, helping these agencies to generate and share high-quality information about their water resources.

WMO, with the support of UKCEH, which produces hydrological summaries and projections for the UK, is now developing implementation plans to turn HydroSOS into a reality. Scientists and funders across the world who are interested in being part of HydroSOS are therefore now being asked to come forward and collaborate to enhance global capacity to monitor, predict and report water-related information for their respective countries and regions.

HydroSOS will provide WMO Members with equipment to measure and report water data. The hydrological information gathered will inform action and strategies aimed at reducing economic losses and deaths due to droughts and floods.

Professor Alan Jenkins of UKCEH, who now leads the initiative for WMO, says: “Having reliable hydrological information is critical for making effective and timely decisions to ensure people have enough water for drinking, crop irrigation, energy needs and economic activity. However, at local level in many parts of the world, there are substantial data and knowledge gaps regarding water availability and vulnerability to water-related threats.”

Further information about HydroSOS can be found on the WMO website. To get involved, email



Notes for editors

Media enquiries
For interviews and more information, please contact Simon Williams, Media Relations Officer at UKCEH, via or +44 (0)7920 295384.

About the World Meteorological Organization (WMO)
The World Meteorological Organization is an intergovernmental organization with a membership of 193 Member States and Territories. It originated from the International Meteorological Organization (IMO), the roots of which were planted at the 1873 Vienna International Meteorological Congress. Established by the ratification of the WMO Convention on 23 March 1950, WMO became the specialised agency of the United Nations for meteorology (weather and climate) operational hydrology and related geophysical sciences a year later. The Secretariat, headquartered in Geneva, is headed by the Secretary-General. Its supreme body is the World Meteorological Congress. / Twitter: @WMO

About the UK Centre for Ecology & Hydrology (UKCEH)
The UK Centre for Ecology & Hydrology is a centre for excellence in environmental science across water, land and air. Our 500 scientists work to understand the environment, how it sustains life and the human impact on it – so that together, people and nature can prosper.
We have a long history of investigating, monitoring and modelling environmental change, and our science makes a positive difference in the world.
The UK Centre for Ecology & Hydrology is a strategic delivery partner for the Natural Environment Research Council, part of UK Research and Innovation. / Twitter: @UK_CEH / LinkedIn: UK Centre for Ecology & Hydrolog

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.