The Addis Ababa city is at present supplied with water from three surface water resources, the Legedadi, Dire and Geffersa reservoirs, and ground water sources . The Legedadi dam (1970, height: 44 m) and the Dire dam (1999, height: 41m), have a capacity of 44MCM and 19MCM respectively. The project objectives included a)the conduct of a bathymetric survey of Dire reservoir, the calculation of current storage volume, b) the review of the collected dam instrumentation data and of the dam stability status, c)the review of particular problems related to specific electro-mechanical components installed at Dire and Legedadi dams, the proposal of rehabilitation optionsat detailed final stage and of methods of implementation and time schedule, and the preparation of tender documents for material provision, and d) the review of structural modifications requested at Legedadi dam, the proposal of possible alternatives and methods of implementation and time schedule, the design of the necessary works at a detailed final stage and the provision of tender documents.
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