Hydrology of the Panama Canal

A most critical and interesting period in the history of the discharge from the Chagres River Basin has just been completed, and, on account of the wide-spread interest in the Panama Canal, it seems pertinent just now to put on record certain data bearing on the hydrology and other natural phenomena of this basin. In comparatively close sequence have followed the year of minimum run-off, the year of least dry-season run-off, and the year of maximum discharge, and these and other facts relating to the water supply of the lake seem to be of especial interest at this time. In a way, this paper may be considered as an extension of the records set forth previously by A. P.