When the Levee Breaks (Supernatural episode)
| Supernatural episode | |
|---|---|
| “When the Levee Breaks” | |
| Episode no. | Season 4 Episode 21 (#81) |
| Writer(s) | Sera Gamble |
| Director | Robert Singer |
| Production no. | |
| Original airdate | May 7, 2009 |
| Episode chronology | |
| ← Previous | Next → |
| "The Rapture" | "Lucifer Rising" |