SUMMARY
The area of El Tarf is along the littoral and fact part of the most sprinkled areas the Algerian North-East. The climate of El Tarf is of the wet Mediterranean type, characterized by two six months seasons each one. The low density amongst principal stations in our zone of study does not facilitate the interpretation of a weather parameter like pluviometry. What with obliged us to add some pluviometric stations available presenting long series. On the whole 5 weather stations and stations are retained with a series of observations (1975-2009). The correction of the annual values is calculated by the method known as of double office plurality. So that this method is effective, it would be necessary that the couples belong to the same climatic conditions and geographical. The classification of the indices of the pluviometric coefficients shows that the negative pluviometric anomalies exceed the positive anomalies and that more the overdrawn long periods of years were recorded rough the year (1993).