احتمالات الهطل في إقليم الساحل و الجبال الساحلية

This study deals with the issue of precipitation probabilities in the coastal and mountainous region in Syria. It concentrates on the deviation of precipitation. The study illustrates in detail the frequent distribution of seasonal precipitation and defines the return periods and the decades for all the stations of the study. It shows that the annual average of precipitation is not a reliable index of precipitation in planning the projects based on investing in precipitation water. Hence, this research aims at studying the frequency of precipitation quantities and their probabilities; this is done by defining the values of normal precipitation (40-60%) to make use of them in agricultural planning. The hypothesis of the study is that the average of precipitation lies in the highest values of normal rains. Consequently, this assumption is unreliable for developing and managing water resources in the region under study.