evacuated from a town below the dam as attempts are made to reinforce the wall which has been damaged by heavy rain. workers are doing everything possible to prevent this dam from besting since dawn a military helicopter has been dropping sacks of gravel water has to open the concrete struction at the same time firefighters are trying to pump out water the reservoir contains about 1200000 tons of water and residents of northern england's peak district fear the area will be flooded the environment agency has issued a severe flood warning because we don't know the state of the the dom and if there was a catastrophic failure of the volume of water running through a turn like we live ridge would have a devastating impact days of heavy rainfall caused water levels to rise and seriously eroded the dam which lies south east of manchester. more than a 1000 residents of whaley bridge with temporarily evacuated from their hinds many spent the night in emergency shelters and no one knows if and when they'll be