The Lempa River is shared by Guatemala, El Salvador and Honduras, making its management a good example of transboundary cooperation. To reach consensus, action was taken to develop a treaty as part of a regional process. However, since the treaty was not accompanied by strategies designed by local actors, it is somewhat weak. Nonetheless, this case illustrates that political willingness is crucial for advancing towards IWRM in transboundary watersheds.
The quality of groundwater recharging the Guarani aquifer is threatened in some areas by rapid land-use changes, and locally by rapid urbanisation. Action was taken by the World Bank through a GEF-funded project on the ‘Sustainable Development & Environmental Protection of the Guarani Aquifer’, which included scientific studies, institutional provisions and transboundary groundwater management. This case study reinforces the lesson to ‘think globally but act locally’.
Steadily shrinking for decades due to unsustainable irrigation policies, the Aral Sea is under increasing pressure, making both allocation and availability major challenges. Action has been taken and the Basin Economic Allocation Model has been developed as a long-term decision support system to facilitate putting “value on water use”. This demonstrates that economic models can be applied to assess economic value maximization of different water uses.
Unsustainable irrigation policies during the Soviet era have had devastating consequences for the Aral Sea. With the collapse of USSR, the riparian states took action and entered into agreement on Cooperation in the Joint Use and Protection of Water Resources of Interstate Significance. Furthermore, the international community took action and much attention has been devoted to re-establish the Aral Sea ecosystem. This case illustrates the importance of engaging all key stakeholders.
In Central Asia, water is unevenly distributed with states positioned downstream being placed in a very unfavourable position. The situation is further complicated since the benefits from cooperation are highly asymmetrical. Despite the challenge, the states have taken action and entered into a regional agreement, which attracted the international donor community to engage further. This case illustrates how international initiatives can influence institutional arrangements in transboundary basins.
The Nile region relies heavily on its groundwater, nevertheless, it is often neglected in national water policies. However, efforts were made to integrate groundwater as an aspect of IWRM, predominantly through a proposal of relevant capacity building actions. These were categorised into three groups: groundwater governance, operational management and, analytical tools to support operational management, illustrating that the main focus should still be devoted on the institutional and regulatory frameworks and management instruments.
The Lake Victoria Basin is facing major ecological challenges stemming from unsustainable agriculture practices and deforestation, impacting the livelihoods of the local communities. Actions have been taken, including an action plan for management of the basin and the establishment of Lake Victoria Basin Commission, responsible for management initiatives. This case study provides insights into the link between policy formulation and implementation and enforcement. Especially, it demonstrates the importance of rooting the policies within the local communities.
Complex environmental, social, economic and political structures make the Nile hard to manage. The Nile basin states have, because of these issues, collectively recognised the need to protect, manage and utilize the Nile basin in an integrated sustainable manner through a close co-operation. Action was taken and the Nile basin states formed the Nile Basin Initiative. This illustrate the opportunities created by multidisciplinary networks to solve complex environmental problems, stemming from their broad platform.
Poor domestic and international coordination between South Africa, Swaziland and Mozambique has led to conflicts over the water utilisation of the Komati River basin. Despite these challenges, action has been taken to strengthen the institutional and legislative framework. These actions demonstrate that in the contexts involving transboundary water resources, a strong institutional framework can promote political and economic cooperation between riparian states.
The Senegal River has seen considerable migration of people in view of worsening drought and desertification. Furthermore, it is subjected to threats such as loss of arable land, and pollution from waste. To address the problems and to realise the potential of the basin, the Senegal River Development Organisation was established by three of the riparian states. This case gives important insights into how an institutional and legal infrastructure can be built in stages.