The Costa Rican government decided to revise its system of water use levy when it became evident that it was disproportionately low. Action was taken by key stakeholders to reconstruct a design of the water use levy to reflect two basic elements of water charge: water use rights and environmental water services. From this experience, the most important lesson is that political will must support legal and technical works when reforming economic instruments.
The Great Ruaha River is important in terms of the utilisation of its water for agriculture, meeting the ecological needs, and the generation of hydroelectric power. During the early nineties, a series of zero flows in this previously perennial river alerted the authorities to hydrological and environmental change. A project was initiated to investigate the reasons and possible solutions. This case illustrates the critical role and benefits of long-term, large-scale, interdisciplinary research in approaching complex problems.
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.
Activities such as horticulture and tourism around the Great Barrier Reef create sediment, nutrient and pesticide runoff, placing increased pressure on the ecosystem. The World Wildlife Fund has taken action, predominantly by raising awareness. The key lesson is how a carefully orchestrated campaign can convince decision-makers of the importance of integrated river basin management as a means of reducing land-based marine pollution.
Oil-shale mining and oil-shale based electricity production has caused serious damage to ground and surface water in the Viru-Peipsi catchment area in Estonia. Action was taken to enhance the protection of the water resources through a project that set out a management plan. The project included data collection, monitoring and capacity building. Due to the success of this project, it can be used as an example for future developments.
After some devastating floods in the Yangtze, the Chinese government took action and issued a policy to counter floods, including wetland restoration. WWF further assisted and developed four pilot sites to demonstrate the benefits of wetland restoration for biodiversity, and to seek alternative income options for farmers, based on the sustainable use of wetlands. This case illustrates the value of a participatory approach.
In Ukraine, reforms in the sector of water supply and sanitation have focused on centralising water supply and sanitation. Efforts have been made to decentralise water management, delegate to local authorities as well as increase supply in rural areas. This has been done through awareness campaigns, capacity building and innovative techniques of wastewater reuse. The key lesson learnt from this case is that IWRM principles need to be considered when planning for water infrastructure.
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.
El Salvador has experienced an increased vulnerability due to Climate Change. To tackle the challenges, an Early Warning System has been installed. This is part of the strategy of the local government to reduce the vulnerability and develop the capacity of the area to deal with floods and landslides. One lesson learnt is that political stability in an area is a great asset when carrying out any political reform.