Brisbane Times | Manly Dam flooding threatens lagoon Brisbane Times Water begins to overflow Manly Dam on Wednesday morning as the SES warns residents near Manly Lagoon of a possible evacuation. 22/04/15. NCH NEWS - storm hits the Hunter Valley . pic shows a male and a female. Up next... Cyclone-like storm leaves ... Water has started to spill over dam walls Residents on alert after Manly Dam begins spilling Sydney storm: Manly Dam continues to overflow as locals brace for evacuation |