The Zambezi River Basin is home to about 40 million people who rely on the river for drinking water, fisheries, irrigation, hydropower production, mining and industry, ecosystem maintenance, and other uses. The river also attracts tourists from around the world, who come to see Victoria Falls and wildlife living along the river banks. Tourism supports local economies and brings much-needed foreign currency into the basin countries. Protecting and managing the sustainable use and development of the Zambezi is extremely important to the people living in the region. Transboundary management of shared water resources has been a continuing challenge for all of Southern Africa, particularly in the Zambezi River Basin. The Zambezi (see fig. 1) is the largest river basin in Southern Africa, covering some 1.37 million square kilometers across eight countries: Angola, Botswana, Malawi, Mozambique, Namibia, Tanzania, Zambia, and Zimbabwe. Water management in the basin is especially difficult because countries have multiple and competing interests; inadequate basin-level institutional structures; institutional, legal, economic, and human resource constraints; and poor data collection, poor communication, and inadequate training. See also: http://hdl.handle.net/2027/spo.4750978.0015.208