In 2015, during COP21, UNESCO’s Intergovernmental Hydrological Programme organized with ARCEAU-IdF and SIAAP the first international conference on Water, Megacities and Global Change. The conference gathered almost 400 participants from all over the world with various profiles: scientists, operators, elected officials and civil society.


Main issues: State-of-art on water governance in megacities, highlight on innovative solutions in the water field, development of an international network of megacities.

Programme: 56 scientific and technical communications, 3 round tables on water governance and adaptation to climate change, 1 declaration presented at COP21 on Water Megacities and Climate Change



Digital and printed edition in English, Spanish and French - Water, Megacities and Global Change. Portraits of 16 Emblematic Cities of the World

Creation of a Megacities Alliance for Water and Climate (MAWAC)


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