Sky News Australia | Evacuation alerts cancelled as flood warnings downgraded ABC Local The flood warning for the Hawkesbury and Nepean rivers has been downgraded to minor after a spill from Warragamba Dam reached its peak. Severe weather conditions caused flooding across New South Wales overnight, but the NSW State Emergency ... State Emergency Service cancels Hawkesbury flood evacuation warning after ... Days of heavy rain have caused Warragamba Dam to spill over threatening ... Flood warning as Warragamba dam spills |