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Whaley Bridge dam: RAF Chinook brought in

Emergency crews are racing to save a damaged reservoir, as "terrified" residents fear their Derbyshire town could be flooded.Water is being pumped out of the 300-million-gallon Toddbrook Reservoir and an RAF helicopter is dropping 400 tonnes of aggregate around it.Part of the dam wall collapsed on Thursday afternoon.About 1,500 people evacuated Whaley Bridge amid warnings they were in "mortal danger".How dangerous is it?Police, the Environment Agency, and the Canal and River Trust have all said there is a "real risk" the dam could collapse.Julie Sharman, from the Canal and Rivers Trust, said it was "a critical situation" but added that the weather had improved and the water levels had reduced by 20cm."We aren't putting a figure on ...