deficits, when the future conditions are assumed to be known. The statistical analysis of the results helps in the formulation of the objectives for long-term Q assuring the carry-over storage for a predetermined risk of failure. The objective for long-term
Q will fail if the low flow is severe. Thus some deterministic and statistical hypotheses have been used to formulate an objective for the mean term of flow Q (tj) which is calculated each day t and adjusted to the hydrological conditions of the year
rule is a statistical decision-making tool. The analysis of flow data provides us with statistical measures to generate long series of synthetic inflows associated with summer deficits. A simplification has been introduced by choosing only the values