Wathersheds of Tacana originate on the volcano, with both shared by Guatemala and Mexico. This region is of great strategic importance for both countries since they supply water to a large number of residents in the cities located downstream and are the main source of irrigation water for agriculture. In the lower reaches, fishing is an important source of income.
After the USSR was dissolved, Romania has experienced water scarcity for agriculture. The World Bank and USAID are providing loans/funds for irrigation projects and to strengthen water users associations. This case thus illustrates that irrigation subsidies may be needed to support agriculture until farming efficiency improves and returns from the sale of agricultural products can cover costs.
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.
The Upper Guadiana Basin provides a classic example of conflict caused by the intensive use of water resources in a semiarid region. Since the 1960s, uncontrolled abstraction of groundwater to provide water for crop irrigation in the area has lowered the water table in places by up to 50m, causing the main river channels to run dry and some wetlands to become desiccated. On the other hand, the abstraction has also supported a booming agricultural economy.
For centuries the Upper Guadiana Basin has been irrigated with groundwater, resulting in a drop in the water table of more than 20 meters. Actions were taken to address this issue, including regulations restricting aquifer abstraction and economic incentives to encourage farmers to improve irrigation efficiency and plant alternative crops. The key lesson learnt is that surface and underground waters cannot be managed separately.
There were concerns that Lake Arenal in Northern Costa Rica was threatened due to problems of deforestation and possible premature sedimentation, leading the government to take action, resulting in successful national and local benefits in terms of energy produced and area irrigated. The most important lesson learned is the importance of consulting all parties involved before initiating the project to achieve the best result.
Uganda is currently experiencing rapid depletion of water resources, which, in addition to ecological challenges, is leading to conflicts in some parts of the country. The Ugandan government has taken action and formulated policies and policy regimes to regulate land use and impacts on the environment. Despite the existence of laws and regulations, this case study illustrates the discrepancy between policy formulation and the reality of implementation on the ground.
The Lake Ossa complex is faced with unsustainable fishing practices, habitat destruction and deteriorated water quality. These trends have severe negative impact on the livelihoods of people, leading to further unsustainable over-exploitation. To combat these developments, a sustainable livelihood approach has been applied to foster collaboration among stakeholders. From this experience, it is evident that active local NGOs can be vehicles for facilitating dialogue and mobilising different stakeholders.