The primary objective of this report is to provide a coherent and comprehensive review on integrated urban water management (IUWM) approach to assist public authorities to identify and address the future challenges of urban water supply, sanitation and flood management in African cities.
... Подробнее + This report presents the existing and future challenges in Africa, the possible options for innovative technologies and approaches for their breakthrough and a way forward to achieve the objectives of IUWM. It highlights technical and institutional constraints of the IUWM in Africa. It presents the global and African best practices and trends in IUWM which are linked to urban development and which have very good lessons learnt that can be shared within and among the cities in Africa. The report consists of four chapters. Chapter two reviews the existing condition, future challenges and opportunities in Urban Water Sector (UWS) in Africa. The review covers the current situation of urban water systems and their management approaches; the major future change pressures (climate change, population growth and urbanization, deterioration of infrastructure systems) and their impacts on UWS; and opportunities for implementing the IUWM approach in Africa. Chapter three introduces the key concepts and conceptual framework of IUWM. The framework has been supplemented by appropriate technologies and innovative approaches of IUWM that will be suitable for cities in Africa. This chapter also presents the global experiences and best practices of IUWM that can be shared within the Africa cities. Chapter four presents case studies to demonstrate how the IUWM framework can be operationalized and to select the appropriate technologies and approaches as discussed in chapter 3 based on the different typologies of the cities and development stages in Africa. The typologies include an emerging town in Uganda (Masindi), a city with partially developed infrastructure in Ghana (Accra) and fully developed city in South Africa (Cape Town). Based on the cases, a few recommendations (road map) for the implementation of IUWM approach for other cities in Africa have been presented in chapter four.
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The main purpose of this paper is to explain the patterns of access to water supply and sanitation facilities in urban areas in Sub-Saharan Africa since the late 90's, and its relation with the performance of service providers in the case of improved water supply.
... Подробнее + It also seeks to explore the institutional context of the water supply and sanitation sectors. The paper concludes that services providers in Sub-Saharan Africa have been unable to keep up with urban population growth. Service providers are overwhelmed by the pace of urban population growth as they face high distributional losses, low billing collection, overstaffing, and under recovery of costs. The institutional frameworks are yet to be completed as there is vast political inference in service provision and regulation, as well as obstacles for effectively undertake public private partnerships. The paper is organized as follows. Section one presents definitions of water supply sources and sanitation, as well as the sources of data used for the analysis. Section two discusses the current and projected trends of urbanization, and introduces the country clustering used for analytical purposes. Section three and four present pathways of access to water supply sources and sanitation facilities -respectively- in urban areas in Sub-Saharan Africa, and discusses trends in access by country cluster. Section five explains the operational and financial performance of services providers in the region. Section six explores the existing institutional arrangements for the urban water supply and sanitation service provision. Finally, section six presents the main challenges for the future expansion of sustainable improved water supply and sanitation services.
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The overall goal of this book is to change the way urban policy makers think about urban water management, planning, and project design in Africa.
... Подробнее + African cities are growing quickly, and their current water management systems cannot keep up with growing demand. It will take a concerted effort on the part of decision makers across sectors and institutions to find a way to provide sustainable water services to African city dwellers. This book argues that these complex challenges require innovative solutions and a management system that can work across institutional, sectoral, and geographic boundaries. A survey conducted for this analysis shows that African city leaders and utility operators are looking for ways to include a broader range of issues, such as water resources management, flood and drought preparation, rainwater harvesting, and solid waste management, than previously addressed in their water management plans. This book argues that integrated urban water management (IUWM) will help policy makers in African cities consider a wider range of solutions, understand water's interaction with other sectors, and secure resilience under a range of future conditions.
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According to the World Bank's Africa strategy (World Bank, 2011d), Africa has an unprecedented opportunity for transformation and sustained growth.
... Подробнее + The World Bank continues primarily to support our client governments in implementing traditional water supply and water resource management projects. In mid-2010, a group of World Bank sector managers from Africa met with the water anchor to discuss whether Africa could learn more from other more urbanized regions. These papers covered the topics of urbanization; access to water and sanitation services; water resources management; flooding and disaster risk management; wastewater, drainage and solid waste management; and the potential to establish an Integrated Urban Water Management (IUWM) network in Africa. The team commissioned four case studies in cities in which the World Bank is actively engaged: Nairobi (Kenya), Arua and Mbale (Uganda), and Douala (Cameroon). A knowledge, attitudes, and practices survey of city leaders was carried out by two established networks in Africa, the African Water Association (AfWA) and the United Cities and Local Governments of Africa (UCLGA), and specialists in the field were consulted. A large database of data relevant to water management was established for 31 selected cities and maps of future urban extent for these cities created, data that did not exist before.
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Рабочие документы 71743 JUN 01, 2012
Jacobsen, Michael; Webster, Michael; Vairavamoorthy, Kala
This paper is one of a series of analytical studies commissioned by the World Bank's Africa Region and Water Anchor which are intended to identify and address the future challenges of urban water supply, sanitation and flood management in Sub-Saharan Africa's (SSA) cities and towns.
... Подробнее + Following the terms of reference for the assignment, and as indicated by its title, the paper is directed at understanding and describing the linkages and interdependencies between water management and water security on the one hand, and urbanization, urban planning and development on the other. The paper is structured in six sections. Section one presents an overview of urbanization trends in SSA. This is followed by a discussion in Section two of what can be seen as the corollary of the unprecedented urban population growth now occurring and projected for SSA, large-scale urban expansion, involving potentially massive increases in urban land cover. This expansion has implications, also discussed in section two, for the internal structuring of African cities and towns, and for the planning and development of the overall urban form which is resulting, as well as for the environmental risks cities and towns face now and into the future. This 'poor urban planning' in the present-day has its roots in the inherited practices of colonial-era planning theories and practices, which are described in section three. These still resonate, as discussed in section four, which discusses key constituent aspects of contemporary planning systems in Africa, as illustrated by a number of case studies. In section five, the focus shifts to the current institutional experience with urban water management, again with a number of good practice cases provided. The author then turn in the concluding section seven to the key concern of this issues paper: that of integrating urban planning and water management as the Integrated Urban Water Management (IUWM) approach emerges- or, perhaps to put it better, of finding ways in which such integration can promote the emergence of IUWM. This is a necessary but difficult task, complicated by the reality that, as seen in the quote above, IUWM requires quite considerable coordination within the water sector alone. Moreover, our preceding analysis demonstrates, and this is the core argument of this paper, that seen from the side of the overall urban planning system, the deficiencies, decline and the delegitimizing of the 'traditional' planning system and practices in SSA, and the theory which underpins them, along with the failure to modernize them in a consistent fashion, has led, if anything, to greater fragmentation in the planning and managing of urban development. Land use planning and infrastructure (and other sector) planning, including water, typically occur in an uncoordinated fashion. This makes planning adequately for large-scale urban growth and expansion that much more difficult.
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The impact of climate change is likely to have considerable implications for water resource planning, as well as adding to the risks to water infrastructure systems and effecting return on investments.
... Подробнее + Attention is increasingly being paid to adaptation strategies at the regional and basin level; however, the current paucity of information regarding the potential risk to hydrological systems at this scale presents a substantial challenge for effective water resources planning and investment. This study is intended to help bridge the gap between high-level climate change predictions and the needs of decision-makers, including World Bank Task Team Leaders, government agencies, investors, and national economic development planners, whose programs and investments will be affected by basin- and regional-level impacts of climate change on water resources and related infrastructures. This study evaluates the effects of climate change on six hydrological indicators across 8,413 basins in World Bank client countries. These indicators, mean annual runoff (MAR), basin yield, annual high flow, annual low flow, groundwater (base-flow), and reference crop water deficit, were chosen based on their relevance to the wide range of water resource development projects planned for the future. To generate a robust, high-resolution understanding of possible risk, this analysis examines relative changes in all variables from the historical baseline (1961 to 1999) to the 2030s and 2050s for the full range of 56 General Circulation Model (GCM) Special Report on Emissions Scenario (SRES) combinations evaluated in the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4).
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Рабочие документы 67338 SEP 01, 2011
Strzepek, Kenneth; Jacobsen, Michael; McCluskey, Alyssa; Fant IV, Charles; Boehlert, Brent
The impact of climate change is increasingly important for the design, construction, and maintenance of water sector infrastructure. Average global temperatures are on the rise, causing cycles of extreme weather: droughts and flooding are becoming common; seawater levels are rising; and many locations are considerably drier, impacting water sources such as lakes and rivers.
... Подробнее + Groundwater supplies are under stress due to decreasing precipitation rates and increasing extraction rates. Urban water systems must meet the demands of expanding industry needs and rapid population growth. Pollution adds to the growing threats to water resources, increasing treatment requirements for providing safe water to city residents. With two-thirds of the world's megacities located in regions that are vulnerable to the impacts of climate change, urban water utilities are facing an increasing need to improve the management of water resources and associated infrastructure. Diversifying sources of water supply will become increasingly important whether through the construction of new storage facilities, the appropriate and sustainable extraction of groundwater, water trading or conservation, or the use of recycled or desalinated water. This water note, based on the input of 20 large utilities around the world presents the perceptions, experiences, and approaches to addressing climate related challenges of urban areas in developing, middle income, and developed countries.
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This report is part of a larger World Bank effort that seeks to provide analytical and strategic assistance to Bank staff and utilities in client countries as they begin to consider the implications of climate change on water resources.
... Подробнее + The key objectives of this document are to: 1) improve understanding and awareness of the operational implications of climate change on the provision of water and wastewater services by urban utilities; 2) present adaptation actions conducted at the utility level for inspiration; 3) establish an analytical framework to assist Bank staff and client countries' utility managers to identify and prioritize potential climate change adaptation measures; and 4) assess the feasibility of implementing adaptation measures based on a set of criteria. This report is structured as follows: chapter one provides an overview of the role that climate change will have on urban water utilities and highlights the often competing priorities that water managers are faced with in developing countries; chapter two describes the relationship between climate change and water resources as they influence water service provision; chapter three presents a framework for analysis of vulnerability and adaptive capacity of water providers; and chapters four presents a framework for adaptation actions. Annexes contain detailed graphs and statistics taken from the international workshop held in Madrid, Spain in January of 2009 and utility specific case studies which are highlighted throughout the report.
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Рабочие документы (нумерованная серия) 54235 APR 01, 2010
Mexico, the world's fourteenth largest economy, has emerged as one of the global leaders in confronting the climate challenge. The country has committed to ambitious CO2 reduction targets and has rolled out a multi-sectoral effort to adapt to a changing and more uncertain climate.
... Подробнее + There has been a steady march from policy and regulation to institutional development and sub-national climate action plans. Mexico's overarching strategy for combating climate change is described in the Special Climate Change Program (PECC). To meet the bold objectives of PECC there is recognition that the states will be pivotal in implementing policies. Accordingly, several states arc in the process of preparing climate change plans, addressing both mitigation and adaptation. Building upon lessons learned, the Government of Michoacán, with the support of the Federal Government, is in the process of preparing a state climate change action plan. This report provides details of a consultative process undertaken to inform the development of the state climate change plan in Michoacán. The distinguishing feature of the exercise is its attempt to pilot a risk management approach that combines the high-end science of climate change with local expertise and stakeholder experience to identify climate change adaptation priorities.
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Рабочие документы 58905 JAN 01, 2010
Damanill, Richard; Rodriguez, Diego Juan; Glauber, Ann Jeannette; George, David; Jacobsen, Michael Peter Steen; Ramos, Verania Sanchez
Climate change is real, and taking prudent measures to plan for and adapt to climate change must become an integral part of the Bank's water practice.
... Подробнее + There is now ample evidence that increased hydrologic variability and change in climate has and will continue have a profound impact on the water sector through the hydrologic cycle, water availability, water demand, and water allocation at the global, regional, basin, and local levels. This report and the analytical work leading to it are focused on key topics related to the impact of climate change on the water cycle and water investments. This report contributes to the World Bank agenda on climate change and more specifically, informs the water sector investments on climate issues and climate-smart adaptation options. Using the existing knowledge and additional analysis commissioned. The report illustrates that climate change is affecting the hydrologic cycle and the projected future hydrology will have a direct impact on the water resources base availability, usage, and management. Depending on the type of the water investment, this impact can be positive, negative, or neutral. The report addresses the stress on and vulnerability of the water systems through use of reliability, resilience, and robustness as the key indicators of sensitivity of water systems for climate induced failure. Current practices in the sector are examined in order to better understand the state-of-the-science for incorporating current and future variability and change in hydrology and climate in the Bank's portfolio for project planning and design. New and innovative practices taking into account adaptation options for water systems and risk-based decision making in water investments are reviewed and assessed for application to investments in infrastructure. The climate change dimension is placed within the context of the impact of other factors (within and outside the sector) such as population growth (and associated increase in demand) and land management (particularly as related to water), which in some cases may be far more significant and critical than that of climate change in some parts of the world. Finally, recommendations for a progressive agenda on water and climate change are made.
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Рабочие документы (нумерованная серия) 52911 NOV 01, 2009