In Costa Rica, action was taken to introduce water pricing to pay for services provided by forests in watershed areas. As a result, Costa Rica’s watershed owners are beginning to be rewarded for providing water, whether for drinking or for generating electricity. The main lesson is that initiatives that ensure local groups are included in the benefits of conservation are needed to involve them in helping to protect the water catchment areas.
The Reventazon River Basin has been subjected to severe degradation, mainly through water pollution, leading to proliferation of disease, increased cost of drinking water, and endangered biodiversity. Action was taken by establishing the Committee for the Management and Planning of the Reventazon River Basin working with conservation and land management. The key lesson for success is the importance of the coordination of the different actors that deal with the basin management.
Rural and peri-urban areas are often neglected when making infrastructure investments. However, these areas could gain from treatment of domestic wastewater through the construction of wetlands. In Bulgaria, the problem of wastewater treatment was addressed through the construction of a wetland for treating wastewater from domestic sources. The lesson learnt is the importance of community initiatives.
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To protect the Panama Canal Watershed, which was created when the Panama Canal was constructed, formal limits to its utilisation was set up, including the Panama Canal Treaty and the creation of a Panama Canal Authority. This case study predominantly illustrates the peculiar problems that arise when a highly artificial watershed is managed by a modern, internationally oriented public corporation with a country that is still copping with the hydraulic culture and a national water policy.
In Australia, a new approach to water management was needed to allow imported water to be used for irrigation without increasing the salinity of the soils or groundwater. Action was taken to develop a framework to enable irrigators to identify and to manage the environmental risks associated with the use of River Murray water for irrigation. The key lesson is that a salt management strategy is relevant wherever there are plans to irrigate land.
The Murray-Darling Basin was subjected to widespread environmental degradation. In response to this problem, the Murray-Darling Basin Commission was established in January 1988 under the Murray-Darling Basin Agreement, focusing on protecting and improving water quality. The key lesson is that the participatory approach used with its Community Advisory Committee has helped the Commission to be successful in winning and maintaining community interest, involvement and support.
In preparation for the new Water Law in Bulgaria, as well as the EU Water Framework Directive, the watershed council was set up as a pilot to test on-site effective and participatory approaches to river resource management in the Varbitsa River. The key lesson drawn is that participatory, open, citizen-friendly and bottom-up approaches are more efficient than top-down administrative approaches.
The Upper Tisza basin requires international cooperation for its management, recognised through bilateral agreements. To further improve management, action was taken to develop a complex joint flood and water management development plan. This project is being implemented in several stages, ranging from elaboration of methods, description of ecological status to the establishment of environmental objectives to improve the current status. The key lesson is the value of bilateral effort in water management.
Clearing for logging, combined with expanding agriculture and palm oil plantations has led to increased flooding, and pollution of the Kinabatangan River due to pesticides and fertilizers. Working in partnership, the Sabah Wildlife Department and the WWF took action and have established the Lower Kinabatangan Wildlife Sanctuary. The key lesson of this case is the value of starting with small-scale feasible projects before scaling up.