Seite - 1269 - in Book of Full Papers - Symposium Hydro Engineering

that cause misuse of the authority's resources, and even could not achieve the target of the proper management of Nile Water to ensure the reduction of water losses and improve efficiency in water allocation and distribution. 3. CONCEPT FOR SOLUTION Proper planning should be based on a decision support system that facilitates handling many data about the structures with the planning constraints in order to optimise the best use of the resources with time, achieving the goals in all plans. A Master Plan (MP) study based on a decision support model for the improvement of structures' functionality and efficiency in water allocation and distribution was adopted. The MP would contribute to the overall River Nile water resource management. The MP study aimed to produce a detailed description of the necessary measures and remedial actions to be undertaken for the selected approximately 150 major existing structures, estimate costs and time schedules for interventions on these structures up to the year 2050, taking into account current and any anticipated future socio-economic and environmental changes. The study aimed at achieving acceptable efficiency of the Egypt’s major control structures with the optimal solution of multi constrained problem. The MP was directed to include all significant criteria that affect the decision of actions in the plan and their proper timing. A multi criteria decision analysis (MCDA) was adopted to obtain the possible plans related to different planning scenarios. 4. METHODOLOGY First, get a baseline condition. This means to assess current safety, stability and efficiency conditions for all structures. Second, define all remedy actions required for all structures in order to regain favourable levels of safety and efficiency. Third, estimate cost for all required actions. Forth, define criteria that affect prioritising actions in one structure before other actions in another structure. Fifth, define criteria for different scenario plans. 1269