Abstract
Some specific aspects of the planning procedure, mainly used for the generation of the water resources master plans, are presented The four step planning procedure presented is strongly oriented toward the use of mathematical models of various complexity. It includes (i) evaluation of the available water resources; (ii) estimation of the water demand; (iii) generation of technical alternatives for satisfying water demands from available water resources; and (iv) ranking of the alternative solutions in accordance with a prespecified set of objectives. Specific planning conditions, mainly valid in developing countries, are discussed and two major conceptual “changes” inside the planning procedure are introduced First, original treatment of the reservoirs as water resources for satisfying demand is presented Knowing the character of different water demands, represented by relative demand coefficients, the implicit stochastic model provides planners with the optimal value of reservoir yield Second, in the final step, due to the lack of the decision makers preferences as well as reliable data, a sensitivity analysis in multiobjective analysis is performed. The presentation of the concept, used for the generation of two recent water resources master plans in Yugoslavia and to be used for one in Algeria, is illustrated in the paper with the results from the Water Resources Master Plan for the Republic of Serbia.

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