Мидраш к Тегилим 42:7

Rabbi Jehudah || said: Once every month ducts rise from the depths to irrigate the face of all the earth, as it is said, "And there went up a mist from the earth and watered the whole face of the ground" (Gen. 2:6). The clouds cause the seas to hear the sound of their waterspouts, and the seas cause the depths to hear the sound of their waterspouts, and the deep calls to the deep to bring up waters to give them to the clouds, as it is said, "Deep calleth unto deep at the sound of thy waterspouts" (Ps. 42:7).