In the very brief period that I have the right to impose upon the time of this meeting, there is only opportunity for a hurried review of some of the progress that has been made during the last year. It is impossible to go into theory, interesting as it may be, as the time can best be spent in giving a glimpse of the many facets of the general problem of getting the most out of our past rainfall‐records. In the first place the detailed results of the study of rainfall in the Susquehanna Valley are now available in the Transactions of the Pennsylvania Electric Association for the year 1937. This report summarizes tne analysis of some 200 rainfall‐stations, and presents a revised map of rainfall, together with a table of estimated average rainfall for tne entire area by years back to 1891.