Handout 1.1 Definition of IRBP What is Integrated River Basin Planning ? Key Message – Integrated River Basin Planning is primarily concerned with the planning the development of a river basin’s shared resources for the benefit of all of the basin states Integrated River Basin Planning has many names: Integrated Water Resources Planning Integrated Catchment Planning Total Catchment Planning Integrated Ecosystem Planning Integrated Watershed Planning All these names refer to very similar ideas. The ideas being that good river basin planning must: Integrate between sectors and between disciplines; Recognize that land and water resources are linked and impact upon each other Recognize that “catchments” are the most effective planning unit because it includes both the land and water resources. Recognize that the sustainable development of the people is linked to the sustainable development of the land and water resources Sometimes the word management is used instead of planning. Management is a broader term and refers to both the planning and the implementation of the plan. These modules focus on planning rather than implementation. But good planning must provide the building blocks or starting points for good implementation. A short of history of integrated water resources planning is given in Reference 1. Pieter van der Zaag, Hubert H.G. Savenije (2000) Towards improved management of shared river basins: lessons from the Maseru Conference. What is a catchment and what is a Basin ? A catchment is the land area on which rainfalls and eventually runs-off into a river. A Basin is the catchment of a large river includes all of the tributaries rivers and their catchment areas. 1 Handout 1.1 Definition of IRBP What is a River Basin ? The catchment or watershed which contains the river and its tributaries Towns Dam Agricultural land Highland areas Wetlands Irrigation Capture fishery Because Basins are large catchments they often cross national borders, as is the case for the Mekong River Basin. This makes the Mekong River Basin an international river basin and, as we shall see, planning for an international river basin is different than for a national river basin. The Mekong is one of a group of some of the world’s largest rivers that have their origins among the snowfields of the Tibetan plateau. Here the Yangtze, Salween, Irrawaddy, Red and Mekong rivers have their sources at between 4,500 and 5,000 metres above sea level from which they flow southwards virtually as a parallel group into China and the province of Yunnan (which interestingly is Chinese for “south of the clouds”). Here this family of great rivers are separated by only a few hundred kilometres before taking divergent directions; the Yangtze most spectacularly flows across the entirety of central China River, the Red River to Vietnam and the Gulf of Tonkin, the Salaween and Irrawaddy to Myanmar and the Indian Ocean. The Mekong on the other hand maintains its southerly course for some 4,500 km to the South China Sea, draining a total catchment of some 795,000 km2 within six countries (MRC Secretariat 2004 Water Utilization Program Start-Up Project: Overview of the hydrology of the Mekong Basin, p.1). The Mekong Basin is shown in Figure 1. 2 Handout 1.1 Definition of IRBP Because the Mekong crosses national boundaries, this raises an additional set of issues. Different governments are responsible for the planning and management of different parts of the Basin. To effectively plan a Basin which crosses national borders, the plan must provide benefits to all of the nations in the Basin. The benefits of nations acting together must be greater than the benefits of the nations acting in their own self-interest. 3 Handout 1.1 Definition of IRBP Benefits come from the use and development of the resources of the Basin. Some of the most important resources of the Basin are “shared”, that is, they travel or flow across national boundaries. What are the shared resources of the Basin ? The two main resources that physically travel or flow across national boundaries are: Water (surface water and groundwater) and Migrating fauna and flora – of which fish are the most economically significant. There are other resources which flow or travel across national boundaries such as air and noise but generally these are not related to water and therefore would not normally be part of Integrated River Basin Planning. The people of the Mekong Basin gain many benefits from the shared resources, such as: Capture fisheries Aquaculture benefits Irrigation Harvesting of products from floodplains, wetlands and flooded forests Energy from Hydropower (hydropower is energy!) Cultural benefits Tourism benefits Urban and industrial benefits Transport Control of saline intrusion / flood regulation The list of benefits is very long and to make the list it is necessary to talk with people who use the shared resources. This is part of stakeholder engagement which will be discussed in Module 3. We will look in more detail at Basin resources and how these resources benefit the people of the Basin in Module 2. 4