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Second International Conference on Water, Megacities and Global Change

Pre-Conference 2020

Following the postponement of the Second International Conference "Water, Megacities and Global Change" to January 2022, an online Pre-Conference event on Water, Megacities and Global Change was held from 7 to 11 December 2020 on Zoom and YouTube live.


Objectives Programme & Outcomes Scientific Papers Presentations 





  • Respond to the need of initiating discussion on the identified challenges and solutions related to water, megacities and global change

  • Maintain the momentum related to the preparation of the global event and deployed over the previous months

  • Respond to the strong interest of international actors in the themes of the conference



Through the presentation of 30 scientific papers, produced and delivered by researchers, operators, PhD students and civil society representatives, the Pre-Conference has provided a brief scientific and technical overview of current water challenges Megacities face and solutions they use to mitigate the effects of climate change. Ten thematic sessions were held from 13:00 to 15:00 (CET time), to enable as many people as possible from all over the world to join theconference. Each session consisted of three presentations of 15 minutes each, followed by a 20-minutes Open Discussion. To enhance interaction, participants were able to ask questions to the authors during the Q/A session through the chat.The Pre-Conference was simultaneously translated in English and French and accessible on Zoom and YouTube.


AGENDA and scientific papers presented

Click on the name of the session to access the full scientific article online


Monday 7 December 2020

  • Mr. Abou Amani, Director a.i., Division of Water Sciences and Secretary a.i., Intergovernmental Hydrological Programme of UNESCO (IHP)
  • Mr. Daniel Marcovitch, President of ARCEAU-IdF
  • Mr. Jean-Didier Berthault, Vice-president of SIAAP
  • Mr. Sylvain Berrios, Vice-president of the Greater Paris Metropolis, in charge of the Management of Aquatic Environments and Flood Prevention
Moderator : Mr. Fadi Comair, Chairperson of the Council of the Intergovernmental Hydrological Programme of UNESCO

Challenges and Solutions in Water, Megacities and Global Change:
Vision of Global Youth

Moderators : Ms. Liudmyla Odud & Ms. Rivonia Pillay, Youth Steering Committee representatives

  • Challenges and solutions in water, megacities and global change in different world's regions
  • Role of the youth in finding solutions in water, megacities and global change and what is lack for youth to be successfully involved in the regional context
  • Discussion on measures to increase the role of youth in the context of regions and globally, and youth’s main message for policy makers

Consult the full programme here in English, in French and in Spanish
Organized by the Youth Steering Committee of the conference
On Zoom and Facebook live on EauMega's Facebook page


Tuesday 8 December 2020

Moderator : Mr. James Leten, Senior Manager, Water Resources, UNDP-SIWI Water Governance Facility

Moderator : Ms. Graciela Schneier-Madanes, Professor Emerita, CNRS France


Wednesday 9 December 2020

Moderator : Ms. Liudmyla Odud, Youth Steering Committee representative

Moderator : Ms. Diane d'Arras, President, International Water Association


Thursday 10 December 2020

Moderator : Mr. Hamanth Kasan, General Manager Scientific Services, Rand Water

Moderator : Ms. Oriana Romano, Head of Unit, Water Governance and Circular Economy in Cities, OECD Centre for Entrepreneurship, SMEs, Cities and Regions


Friday 11 December 2020

Moderator : Mr. Benjamin Gestin, Director General, Eau de Paris

Moderator : Mr. Pierre-Alain Roche, President of the mobility and transport section of the CGEDD, French Ministry of Ecological and Solidarity Transition

  • Challenges and solutions in water, megacities and global change : vision of global youth

Presentated by Mr. Beniamin Strzelecki & Ms. Rinan Shah,
Youth Steering Committee representatives

Outcome of the Youth Online Panel for the Pre-conference of the Second International Conference "Water, Megacities and Global Change"

Consult here the final Youth Declaration in English, French and Spanish

    • Mr. Abou Amani, Director a.i., Division of Water Sciences and Secretary a.i., Intergovernmental Hydrological Programme of UNESCO (IHP)
    • Co-Chairperson of the Programme Committee, Ms. Blanca Jiménez Cisneros, Director-General of CONAGUA, Mexico, and Mr. Jean-Marie Mouchel, Professor at Sorbonne University, France
    • H.E. Ms. Véronique Roger-Lacan, Ambassador, Permanent Delegate of France to UNESCO



    Click on the title of the paper to access the PDF presentation


    Competition between multiple uses of water in the Belo Horizonte Metropolitan Area: the Paraopeba River water basin
    Water scarcity in African cities: anthropic factors or climate change? Case of Bouake (Ivory Coast)
    Water scarcity mitigation in Northern Morocco


    Integrated exploration, analysis and improvements to Urban Water Based Institutional (WBI) mechanisms for informal slum settlements of India: Case studies from Mumbai, Lucknow and Kolkata cities
    Pharmaceutical residuals in water: social challenges and opportunities for upstream mitigation measures in home setting
    The implications of physical and technical conditions on flood resilience in self-build housing in tropical wet and dry Nigeria
    Development and implementation of a holistic framework for Nature-Based Solutions actuation in urban areas
    Evaluating the response of water quality to pollutant loading in the Saigon River system (Vietnam) : modelling scenarios by C-GEM, an estuarine biogeochemical model
    Towards an integrated management of the Ile-de-France sanitation system
    Coping mechanism during erratic rainfall, frequent drought and challenge to supply potable water to millions, a case study of Jaipur City
    Water supply problem for commercial activities on the former Abidjan-Grand-Bassam route (South-East urbanization front on Abidjan)
    Eau de Paris : Preventive management of water resources by development of durable territorial dynamics
    City Water Resilience Approach- A five-step methodology to build water resilience at an urban scale
    Sinking cities: what economic and governance conditions lead to greater resilience?
    To guide territories toward a planned change of urban stormwater management practices
    An innovative data platform for multiple stakeholders to aid decisionmakers with Knowledge, Education, and Governance
    Green infrastructure and stormwater management: opportunities and challenges
    Working better together : interagency cooperation as the key to largescale urban water reuse
    Water and Sanitation Sector Integrity Risk Index
    Assessing Integrity Management in Water Utilities
    Resilient governance for resilient cities – Assessing the governance context for green infrastructure implementation in Hoboken
    Global change in the Sun Corridor megaregion : managed aquifer recharge planning tools in the Central Arizona Desert, USA
    Access to water for human consumption in Lima, Peru: an analysis of challenges and solutions
    City Blueprint Assessment in 3 Central African Cities : a contribution for the improvement of Urban Water Security


    Reconstruction and simplification of the Greater Paris sewerage network
    Technical and technological solutions that leverage the resilience of water supply systems - the experience of EPAL, Lisbon, Portugal
    Ecohydrology for sustainable urban water management


    The waterwheel : a socio-spatial method for understanding and displaying holistic water systems
    It takes a team: helping Megacities build water security in the face of socioeconomic and climate change challenge
    Life Cycle assessment of wastewater source separation scenarios : case study on a new district in Bordeaux, France



    English Version


    Version française






    Click on the agenda to know the content of each day
    Cliquer sur l'agenda pour connaîre le contenu de chaque jour


    English Replay

    DAY 1


    DAY 2


    DAY 3


    DAY 4


    DAY 5

    Replay en français

    JOUR 1


    JOUR 2


    JOUR 3


    JOUR 4


    JOUR 5



    The Division of Water Sciences of UNESCO, ARCEAU-IdF, SIAAP and the Greater Paris Metropolis would like to thank Eau de Paris and Agence de l'eau Seine Normandie for their kind support to the organization of the Pre-Conference "Water, Megacities and Global Change".