Identification of Major Sources of Uncertainty in Current IWRM Practice. Illustrated for the Rhine Basin

Integrated Water Resources Management (IWRM) can be viewed as a complex process in which the effect of adopted water management measures must be monitored and adjusted in an iterative way as new information and technology gradually become available under changing and uncertain external impacts, such as climate change. This paper identifies and characterises uncertainty as it occurs in the different stages of the IWRM process with respect to sources, nature and type of uncertainty. The present study develops a common terminology that honour the most important aspects from natural and social sciences and its application to the entire IWRM process. The proposed framework is useful by acknowledging a broad range of uncertainties regarding data, models, multiple frames and context. Relating this framework to the different steps of the IWRM cycle is helpful to determine the strategies to better handle and manage uncertainties. Finally, this general framework is illustrated for a case study in the transboundary Rhine river basin.     

Mathematical Modelling for the Integrated Management of Water Resources in Hydrological Basins

Mathematical models are tools that can facilitate the instrumentation of the Integrated Water Resources Management (IWRM). The first basin models to be developed were completely hydrological; today, due to the urgent need to plan the sustainable use of water resources, new models are needed that in addition to hydrology also incorporate social, economic, legal, environmental and other aspects. The objective of this work was to identify the characteristics that mathematical basin models must have in order to satisfy the requirements of IWRM. To achieve this, the conclusions of the main international conferences on water and the environment were analyzed; these were conferences in which IWRM was promoted as a strategy to face the challenges of both sectors. IWRM considers social participation as a key element in the decision-making process; consequently, the models must be accepted and applied, and their results interpreted, by those who participate in the process even if they are not modelling experts. This requires a change of perspective in the scientific community for the development of new IWRM models, in government institutions regarding their role as water administrators, and in water stakeholders regarding their role as decision-makers. The results of the analysis indicate that models for IWRM must be accessible to non-expert users, integrate different viewpoints, representing adequately the problem to be solved, in addition be flexible and have a structure focused on practical solutions.     

Water resources management and Integrated Water Resources Management implementation in Malawi: Status and implications for lake basin management

Many countries, including Malawi, are implementing integrated approaches for the development, management and use of water and other natural resources. Integrated Water Resources Management (IWRM) is, arguably, one approach considered helpful in addressing water issues effectively and sustainably. This study assesses the implementation of IWRM in Malawi to the present time, in relation to the five priority areas the country's Integrated Water Resources Management/Water Efficiency (IWRM/WE) Plan (2008–2012) sought to address, as well as the potential benefits of infusing Integrated Lake Basin Management (ILBM) in this approach. Document reviews, key informant interviews, questionnaire surveys and site visits were the employed methods in this analysis. Considering the significant importance of lakes in the country, this study, through application of the strengths, weaknesses, opportunities and threats framework, provides insight on how lake basin management issues can best be incorporated within the existing IWRM‐based framework to promote the management and utilization of lakes for sustainable use. While acknowledging the relevance of a holistic approach, the study highlights the importance for the country to ensure that its development agenda is not negatively affected in the course of implementing IWRM.     

Do We Need to Rethink Our Waterways? Values of Ageing Waterways in Current and Future Society

In the past canals were developed, and some rivers were heavily altered, driven by the need for good transportation infrastructure. Major investments were made in navigation locks, weirs and artificial embankments, and many of these assets are now reaching the end of their technical lifetime. Since then the concept of integrated water resource management (IWRM) emerged as a concept to manage and develop water-bodies in general. Two pressing problems arise from these developments: (1) major reinvestment is needed in order to maintain the transportation function of these waterways, and (2), it is not clear how the implementation of the concept of IWRM can be brought into harmony with such reinvestment. This paper aims to illustrate the problems in capital-intensive parts of waterway systems, and argues for exploring value-driven solutions that rely on the inclusion of multiple values, thus solving both funding problems and stakeholder conflicts. The focus on value in cooperative strategies is key to defining viable implementation strategies for waterway projects.     

Klimawandel und Urbanisierung – wie soll die Wasserinfrastruktur angepasst werden?

Conventional urban water servicing has successfully provided cities with clean water, sanitation and flood protection. Traditional approaches are unsuited to address future challenges like climate change and modern urban development trends (e.g. migration, aging population, densification). As well as increased risks of water scarcity and flooding, society's demands for urban amenity and healthy waterways in metropolitan areas also challenge these traditional principles of urban water management. It is increasingly recognized that solutions to these challenges will not be purely technological in nature; the socio-institutional contexts will also be critical. However modelling tools to support medium and long-term strategic planning of integrated social and infrastructural dimensions are lacking, leaving decision-makers with untested policy ideas. To identify possible transition strategies to a resilient city, the development of the DAnCE4Water (Dynamic Adaptation for eNabling City Evolution for Water) within the EU FP7 project “PREPARED: Enabling Change” as a strategic planning and decision-support tool is thus proposed. DAnCE4Water allows ‘What-if’ experiments by investigating possible consequences of policies and strategic actions, taking into consideration urban development, climate change, biophysical environment and societal dynamics. This paper presents the concept of the DAnCE4Water tool and its application to an example city's evolution 20 years into the future.     

An alternative framework for analysing and managing conflicts in integrated water resources management (IWRM): linking theory and practice

Research on water resource conflicts needs to be better aligned with practitioner approaches to water resources development, chiefly integrated water resources management (IWRM). This paper bridges the gap between research and practice through a novel application of the social–ecological systems framework to a set of 10 conflict cases from an IWRM initiative in rural Central America. The conflicts in the empirical cases are found to be primarily the result of socio-political variables, particularly low levels of trust and social capital, and peacebuilding is suggested as a promising approach to address this suite of conflicts. The paper concludes with a proposed course of research designed to further both theoretical and applied knowledge of water resource conflicts.     

Avoiding Tragedies of the Intellectual Commons through Integrated Impact Assessments

This paper suggests that an ex ante assessment of future social, environmental, and economic impacts – i.e., an Integrated Impact Assessment, as advocated by the European Commission – might be precisely the sort of interdisciplinary and numerate analytical tool to give administrative reality to the principles of Integrated Water Resources Management (IWRM). For these assessments to be an effective administrative tool for IWRM, the general public must be able to use them to transparently compare environmental, social, and economic values and to compel states to pursue policies consistent with their underlying analyses. In making this argument, this paper compares the use of integrated assessments by the European Union and the United States in addressing mercury pollution.     

Water Resources Management and Integrated Water Resources Management (IWRM) in Cameroon

Cameroon is blessed with abundant water resources. Rapid population increase, unplanned urbanisation, intensive industrial and socio-economic development have led to poor and unsustainable management of these resources. Integrated Water Resources Management (IWRM) is a promising approach in ensuring sustainable management of Cameroon’s water resources. It entails management of water for various purposes and not for a single purpose which therefore involves different stake holders aiming at achieving sustainable water resources management. This paper seeks to evaluate recent efforts to implement in IWRM in Cameroon by examining the institutional framework for IWRM in Cameroon, conditions for the implementation of IWRM and proposes reforms for improving IWRM in Cameroon. The paper concludes that reforms such as public participation at local council levels, recognition of water as both an economic and a social good, putting IWRM within the larger context of Integrated Natural Resource Management (INRM) and the exploitation of mathematical models within hydrological basins will improve IWRM in Cameroon.     

Integrated Urban Water Resources Management: A Challenge into the 21st Century

The concept of integrated water resources management (IWRM) was introduced in the realm of the International Water Resources Association some 30 years ago. In the context of the urban environment, IWRM requires that management should encompass not only other sectors such as transportation, housing, etc. but also the concurrence of professionals of different disciplines. This paper presents the challenges faced by two metropolitan regions, one in the developed world and one in the developing world. In both cases it is shown that demand management can play a definite role in achieving integrated water management. The complexity of managing the mega-cities of the 21st century will require the creation of a new professional who will be able to coordinate multidisciplinary team work in the water sector.     

流域水资源一体化管理及其理论框架

概述了水资源一体化管理的发展历程,在综合国内外机构和学者对水资源统一管理看法的基础上,对流域水资源一体化管理的定义进行了探讨,分析了流域水资源一体化管理与传统水资源管理的区别,提出了流域水资源一体化管理的理论框架。最后,应用理论框架,对国外2个典型流域的水资源一体化管理实践与经验进行了分析与评述。     

How do we move from ideas to action? The role of the HELP programme

An overview of the integrated water resources management (IWRM) process is provided as well as an outline of the Hydrology, Environment, Life, and Policy (HELP) programme's actions over the next 5 years as a follow‐up to the recommendations of the Kalmar Symposium of 2002. Most of HELP's implementation, however, will be within the HELP basins themselves, which is consistent with the ‘bottom‐up’ approach of the programme. HELP's niche in contributing to the IWRM process is by defining knowledge gaps and acting via a global network of basins. Through the involvement and support of stakeholders, longer‐term visionary values of research with subsequent benefits to society may be more quickly realized.     

The legal framework for river use in the United States

Use and development of rivers takes place within a complex legal framework that guides the actions of interested parties holding conflicting values. One of the major components of this legal framework is state water allocation law. This law takes several forms among the states, but its basic function is to establish rules for water use by assigning property rights in water. Another component of the legal framework for river use addresses the public access issue. The primary focus here is establishment of the boundary between the exclusive rights of landowners and the rights of the general public to use the surface and underlying beds of waterways. A third component consists of governmental controls over water use and development. These controls restrict the exercise of private property rights in the resource. From an initial focus of protecting the public right of navigation, this law has expanded to include protection of water quality and a variety of other environmental values. The current legal framework provides a relatively sound basis for balancing competing values and interests, but problems exist. For example, the division of water management responsibilities between the federal and state levels of government sometimes results in conflict, and existing procedures for managing conflict related to proposals for water transfer do not appear to be adequate. Therefore, the current framework will not remain static; it must continue to evolve in order to operate more effectively and to incorporate future increases in knowledge and the associated changes in values and management needs.     

Inland waterways for transportation of agricultural,industrial and energy products

This paper examines the use of inland waterways throughout the world, particularly for the transportation of agricultural, industrial and energy products. It is found that there are great variations in their importance from one country to another. This discrepancy can be explained to a certain extent by geographical conditions, but lack of realization of the potential benefits to the national economies also plays an important role. Some countries — especially the oil‐importing developing countries — are now making determined efforts to expand and modernize their waterways transportation systems, but generally there is a lack of national master plans for transportation, including inland waterways, so their development is still taking place on a piecemeal basis.     

Linking integrated water resources management and integrated coastal zone management.

Some of the world's most valuable aquatic ecosystems such as deltas, lagoons and estuaries are located in the coastal zone. However, the coastal zone and its aquatic ecosystems are in many places under environmental stress from human activities. About 50% of the human population lives within 200 km of the coastline, and the population density is increasing every day. In addition, the majority of urban centres are located in the coastal zone. It is commonly known that there are important linkages between the activities in the upstream river basins and the environment conditions in the downstream coastal zones. Changes in river flows, e.g. caused by irrigation, hydropower and water supply, have changed salinity in estuaries and lagoons. Land use changes, such as intensified agricultural activities and urban and industrial development, cause increasing loads of nutrients and a variety of chemicals resulting in considerable adverse impacts in the coastal zones. It is recognised that the solution to such problems calls for an integrated approach. Therefore, the terms Integrated Water Resources Management (IWRM) and Integrated Coastal Zone Management (ICZM) are increasingly in focus on the international agenda. Unfortunately, the concepts of IWRM and ICZM are mostly being developed independently from each other by separate management bodies using their own individual approaches and tools. The present paper describes how modelling tools can be used to link IWRM and ICZM. It draws a line from the traditional sectoral use of models for the Istanbul Master Planning and assessment of the water quality and ecological impact in the Bosphorus Strait and the Black Sea 10 years ago, to the most recent use of models in a Water Framework Directive (WFD) context for one of the selected Pilot River Basins in Denmark used for testing of the WFD Guidance Documents.     

Integrated river basin planning and management: a case study of the Zayandehrud River basin,Iran

This study applies the concept of integrated water resources management (IWRM) to a river basin in Iran, and in so doing, proposes a framework for implementing IWRM principles. Issues such as stakeholder participation, sustainability in several subdomains, scenario analysis, dispute resolution, climate change and well-designed models have been considered. Through a river basin simulation model (RIBASIM) and sustainability criteria, stakeholders made decisions for improving the level of sustainability in the basin. The result of decision making for the future was tested under climate change impacts, and the outputs showed serious challenges, so a strategy is proposed for overcoming these impact effects.     

Bridging parallel discourses of Integrated Water Resources Management (IWRM): institutional and political challenges in developing and developed countries

This paper provides a comparative review of the literature on the institutional challenges and politics of IWRM, in relation to the EU's Water Framework Directive (WFD). It reveals two parallel debates with little interaction. The extent to which IWRM is actually addressed in the WFD literature is questioned, as is the assumption that developing countries can learn from WFD experiences. Finally, the mutual benefits of connecting these parallel discussions are demonstrated, especially in terms of encouraging greater sensitivity to the contingencies and complexities of water management.     

基于二元水循环及系统熵理论的城市用水配置

基于二元水循环理论,在分析城市水资源配置系统结构基础上,构建了考虑水资源质、量均衡的城市用水优化配置模型,并运用多目标求解方法获得水资源分配的可行方案;对信息熵进行改进,构建了系统熵,并将其应用于可行方案的评价中。对昆明市水资源的优化配置计算结果表明,当重视生态效益或者综合考虑生产、生活、环境及生态效益时,系统熵值较小,这将有利于水资源系统的长期健康运行;该方法不仅能对城市用水系统进行简洁有效的分析评价,亦能对用水系统的结构调整、系统发展提供参考意见。     

城市雨水调蓄利用及效益分析——以南京大学仙林校区为例

随着城市化发展,水资源短缺、水环境污染和城市内涝等问题日益突出,雨水调蓄利用成为缓解以上问题的重要手段。以南京大学仙林校区为研究区,进行可集雨量与室外用水需求的水量平衡计算,结合雨水利用措施分析,开展雨水调蓄利用的方案设计及综合效益分析。结果表明:雨水调蓄利用后,研究区综合径流系数下降为0. 532,重现期2、5、10 a对应的屋面集雨量均能满足室外用水需求,对应的单位面积雨水利用年综合效益分别为8 475. 6、10 506. 3、11 786. 4元/hm2。城市雨水调蓄利用可产生显著的生态、经济和社会效益,在城市新区开发和旧城改造过程中应当得到足够的重视。     

Integrated Water Resources Management in the Cross River Basin,Nigeria

This paper examines the implementation of Integrated Water Resources Management (IWRM) in the Cross river basin, Nigeria. The Cross River Basin Development Authority (CRBDA) was established in 1976 with a mandate for integrated development, using the abundant water resources available in the region. Thirty years after the creation of the CRBDA, there is still a large gap between the original objectives and the actual delivery of services to meet the needs of the people. A wide range of study methods, including stakeholder meetings, focus group sessions, interviews and observations at village meetings of selected communities was used to examine the implementation of IWRM against the expectations and needs of the people. The paper concludes that IWRM in the Cross river basin (CRB) has not been very successful. This is attributed to a number of institutional factors, including legal, political, administrative and financial obstacles. This paper recommends that IWRM policies in the CRB should be reformed to reflect local circumstances and conditions.     

Towards Adaptive Integrated Water Resources Management in Southern Africa: The Role of Self-organisation and Multi-scale Feedbacks for Learning and Responsiveness in the Letaba and Crocodile Catchments

South Africa is acclaimed for its water reform and the adoption of integrated water resources management (IWRM) as the framework for managing catchment water resources to achieve equity and sustainability. The proposed process is inherently adaptive, allowing for reflection and learning in complex, uncertain environments such as catchments. A decade on, attention has now turned to implementation. In this paper we present some key findings drawn from a three-year study in six major catchments in the water-stressed north-east of South Africa which examined factors constraining or enabling implementation. Factors critical for the evolution of tenable and appropriate IWRM include a practice-based understanding of policy, the role of leadership and communication, governance, collective action and regulation, and self-organisation and feedbacks. This paper concerns self-organisation, leadership and feedbacks. Their origins, drivers, development and role in building resilience are examined in two of the six catchments: the Letaba and Crocodile catchments. Self-organisation, leadership and feedback loops exist in both but are highly variable in terms of their contribution to IWRM. The underlying factors contributing to their functionality are identified. Despite good efforts to self-organise and functional feedbacks there is evidence of either vulnerability or of limited impact when processes are confined to a local scale, which constrains learning and transformation at a wider scale. In other instances, encouraging evidence is emerging in which leadership, governance and the ability to self-organise are central to effectiveness. We conclude that self-organisation and responsive multi-scale feedback loops are essential for management in catchments understood as complex systems as they provide the basis for learning and response to an evolving context.