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DAM SYNCHRONISATION AND FLOOD RELEASES IN THE ZAMBEZI RIVER BASIN PROJECT: ANNEX 1 OF FINAL REPORT Provide for a study to clean, patch and extend available observed data and carry out statistical analysis of stream flows to inform dam operations. Provide for on-going service as the data provided often has gaps that need to be filled. Carry out verification of existing data from different stations to assess the consistency and quality of information. Put in place systems which require the regular updating of rating curves and calculate flows from observed gauge records. vii
DAM SYNCHRONISATION AND FLOOD RELEASES IN THE ZAMBEZI RIVER BASIN PROJECT: ANNEX 1 OF FINAL REPORT 1 Introduction The Zambezi River Basin extends over 1,350,000 km 2 and is the largest river system in southern Africa. Rising in the North Western Province of Zambia, the river flows approximately 2,650km until it reaches the Indian Ocean. The extensive catchment area drains eight nations namely: Angola, Botswana, Malawi, Mozambique, Namibia, Tanzania, Zambia and Zimbabwe (see Figure 1.1). Due to its sheer geographical expanse and its transnational nature, the Zambezi River Basin is complex to manage in the face of sometimes competing economic and political interests of the different countries that make up the basin, as well as varied requirements from the environment, flood control, hydropower production, agriculture, fisheries, manufacturing, mining and tourism. Figure 1.1: The Zambezi River Basin (Source: ZAMWIS) The concept of integrated water resources management (IWRM) in river basins has been a key field of interest and support in GIZ cooperation for many years, and is also an issue which has been prioritized by the SADC Water Division. In its efforts to improve transboundary water management in the region, GIZ has agreed to support this Project on ―Dam Synchronization and Flood Releases in the Zambezi River Basin‖, which was commissioned by the Federal Ministry for Economic Cooperation and Development, in delegated cooperation with UKAid and the Australian Government Aid Program. The aim of this Project is the drafting of constructive recommendations for implementing water management measures in the basin to safeguard lives, livelihoods and the environment while giving room for further sustainable development with due regard to costs. A wide range of studies have been carried out over past decades on the Zambezi River and its tributaries. These have covered a wide range of technical, social, economic and policy issues relating to the management of water resources in the Zambezi basin. Many of these previous reports have been used as reference material for this study. The first task in this assignment was the compilation of all data and information from these previous studies. This reference material includes a comprehensive digital and hard copy databases of a wide range of variables. 1
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