Global Water Watch
Democratizing earth’s data on water resources
Important Service Update
We regret to inform you that Global Water Watch (GWW) will be made unavailable during November 2026 as we work towards establishing a sustainable framework for its continued development and maintenance.
GWW has played an important role in demonstrating how satellite data of surface water can be made available to a large group of people. However, due to current limitations in team stability and funding, the platform has become outdated.
We appreciate your understanding. For more information please contact Bjorn Backeberg (bjorn.backeberg@deltares.nl) or Jaap Schellekens (jaap.schellekens@deltares.nl)
The archive of surface area of all reservoirs will be made available at github and also stored on zenodo. The code of GWW is also freely available.
Use cases
Water management authorities
Water management authorities like the Water Resources Management Authority in Zambia can more efficiently monitor water resources for economic use, improving disaster preparedness, and ensuring sustainable development.
Security and peace-building
Organisation such as the Water, Peace and Security Partnership can better understand and communicate causes and solutions to water-driven instability.
Supply and demand assessments
Companies like Watermarq use Global Water Watch to analyse reservoir water storage dynamics as part of its basin-scale water supply and demand assessments for governments, companies, and financial institutions.
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