A Systems Approach to Sustainable Water Resources Management in Africa

Transcription

1 A Systems Approach to Sustainable Water Resources Management in Africa Dr. Akiça Bahri National Agricultural Institute of Tunisia Science Centre World Summit 2017 (SCWS2017) Systems Thinking for Sustainability Tokyo, Japan November, 2017

2 The top five global risks of highest concern for the next 10 years Source: World Economic Forum, Global Risks Report 2016

3 Factors driving Africa s ecological footprint and biocapacity Source: Global Footprint Network, 2011

4 Threats to Sustainability Threats to water resources Inappropriate governance and institutional arrangements Unsustainable financing of investments in WSS Climate change Water, energy, food insecurity Globalization Pollution and land degradation Population growth Consumption patterns

5 Africa in C Sea level rise of cm More severe, intense, prolonged droughts and floods -15 to 20% across all crops + 1% Land arididity -5 to 20% rainfall Impacts on water quality Biodiversity loss (81-97%) of African species Loss in production, infrastructure and increased poverty Exacerbated malnutrition

6 LAKE CHAD S VARIABILITY While Lake Chad s surface area fluctuates considerably with the seasonal rains, these dry-season images of Lake Chad show the longterm trend since the 1960s Changes in rainfall during this period have been a major factor as has diversion for irrigation SOURCE: UNEP Water Atlas, 2010

7 Kenya Ethiopia South Africa Thailand Laos China Brazil Australia North America Water storage mitigates variability and change 7,000 6,000 5,000 4,000 3,000 2,000 1,000 Low per capita storage (m 3 /capita) 0 World Bank (2003) Low level of water withdrawal: 3.8% of water resources developed (for water supply, irrigation and hydropower use) Limited ability to cope with runoff variability affects economies and GDP Increased storage (of all types) & spatial redistribution of benefits needed for meaningful development

8 Proportion of population using improved sanitation facilities (%) (left) Proportion of population using improved drinking water sources (%) (right) in 2015 Source: WHO, 2015

9 Irrigation potential developed: Egypt, Morocco, South Africa > 75% % Irrigated Land INDIA: ~50 SSA: 5 Botswana, Sudan, Zimbabwe, Madagascar, Mali, Malawi, Uganda 50-75% Rest < 50%

10 Informal Water Economies Rainfed and irrigated agriculture remains the main source of employment - >50% in SSA and holds great promise for future growth and job creation Women make up more than half of the farmers, produce 90% of the continent s food, and comprise 70% of the agricultural workforce

11 Significant HEP potential Source: Hydropower Outlook for Africa (BMZ, 2007)

12 Water Security and Interconnected Risks Water scarcity Biodiversity loss Extreme weather Governance gaps Environ. risks Geopolitical risks Water Security Economic risks Globalization Food price volatility Pollution Population growth Societal risks Chronic diseases Oil price volatility Source: Modified from Ait Kadi, 2014

13 Conservation and restoration of environment: Implemented in 100% of countries by 2025 Development of national policies and comprehensive institutional reform: 100% of countries by 2025 The Africa Water Vision for 2025 Endorsed by the African Ministers of Water Resources and other stakeholders at the 2 nd World Water Forum in May 2000 An Africa where there is an equitable and sustainable use and management of water resources for poverty alleviation, socio-economic development, regional cooperation, and the environment. Drinking Water: 75% access by % access by 2025 Sanitation 70% access by % by 2025 Irrigation 100% increase by 2025 Hydropower 10% of potential by % by 2025

14 Investments needed for implementing the Africa Water Vision bn US$ p.a. over 20+ yrs Non-structural & inst building 2 Desalination 1 Multipurpose storage (non-hydro) 5 Hydropower-multipurpose Storage 20 Agricultural Water Mgt 5 Urban Wastewater 5 Drinking Water & Sanitation

15 SDG6 reflective of whole SDG framework

16 «It is recognized that water problems cannot be solved by quick technical solutions; solutions to water problems require the consideration of cultural, educational, communication and scientific aspects. Given the increasing political recognition of the importance of water, it is in the area of sustainable freshwater management that a major contribution to avoid/solve water-related problems, including future conflicts, can be found.» International Hydrological Program, UNESCO Interdisciplinary Applying the knowledge and skills from different academic disciplines or subjects that are normally regarded as distinct, to the same task or project A Dictionary of Environment and Conservation. Chris Park. Oxford University Press, Oxford Reference Online. Oxford University Press Integrated Promotes coordinated development and management of water, land, and related resources, in order to not only maximize economic and social welfare, but also ensure equity and sustainability A Dictionary of Geography. Susan Mayhew. Oxford University Press, Oxford Reference Online. Oxford University Press Holistic Takes into account interrelations between people, the environment and ecosystems A Dictionary of Environment and Conservation. Chris Park. Oxford University Press, Oxford Reference Online. Oxford University Press

17 Key sustainability dimensions in water and resource management Sustainable health protection Institutional and social sustainability Technical sustainability Sustainable water and resource management Financial sustainability Environmental sustainability Source: Adapted from SEI, 2017

18 Multiple use water services integrating domestic water, irrigation, fisheries, livestock, industries provide income, nutrition and health benefits, and improve water productivity Water Add support programs for hygiene, sanitation or nutrition for enhanced health benefits Health Livelihood Increase food security and income through additional support for crops, livestock and business for improved livelihood

19 We need to have a systems perspective of the urban water cycle Groundwater Surface water Stormwater/ Rainwater Leakage management Black water Grey water Demand management Source: Vairavamoorthy, 2014

20 Contribute to a livable city Provide reliable, secure and clean water supply Resilient to changes in climate and economics Protect human health ONE WATER APPROACH Provide flood protection Use and reuse natural resources efficiently Minimize environmental pollution

21 Perspective of productive use and beneficiation Source: Vairavamoorthy, 2014

22 Integration of scales, sectors, sources and services

23 Partnerships Research Private Sector (Formal and Informal) Education Civil Society Government

24 Science Policy Society Interface Science Policy Society

25 Conclusions Need innovative methods and technologies to increase resilience of water systems to global change pressures Need a governance that will promote reforms, as well as new technologies and business models Need to engage in policy, work with practitioners, facilitate capacity building Need integration across disciplines and scales for innovation Need systems thinking, planning and implementation to achieve sustainable and resilient solutions

26 Thank you