ἐπιβρέχω
From LSJ
ἄνω ποταμῶν ἱερῶν χωροῦσι παγαί → the springs of sacred rivers flow upward, backward to their sources flow the streams of holy rivers
English (LSJ)
A pour water on, water, cj. for ἀποβρίθουσι in Thphr.HP 5.3.3; rain upon, παγίδας ἐπί τινας LXX Ps.10(11).6. II. impers., it rains, Simp. in Epict.p.92D.