This is a study of the evolution of proposals to develop the Nile Basin to ensure the best use of its precious waters. The hydropolitics of the Nile Valley is the most important issue today for the future of the inhabitants of Egypt, the Sudan, Ethiopia, and East Africa. The story of `Nile Control' is the product of British, Egyptian, and Sudanese engineers and hydrologists, whose designs have determined the way of life of the millions who depend upon the Nile waters for their survival.