Related Clues:

• Came down
• Came down hard
• Rained cats and dogs
• Decanted
• Came down in buckets
• Open, as floodgates
• Served the drinks
• Free up a river's flow, maybe
• Stop stopping up
• Presided at tea
• Allow to flow
• Stop blocking, as a river
• Served tea
• Caused to flow
• Transferred liquid from receptacle, or rained heavily