i would see the river like this. >> kevin tibbles is in minot, north dakota. what is the situation like? >> reporter: they are calling it a wall of water. it is headed in this direction. just over my shoulder, you can see they are frantically trying to build up this earth and berm to protect the city's water supply. as far as the mayor is concerned, they have done almost as much as they can. it is up to mother nature and there is very little they can do to stop it. for residents of minot, the sound of sirens signalled the time to head for higher ground. >> this is a very sad time for the city of minot. >> we are kind of numb. >> reporter: the rising souris river forced 11,000 residents from their homes as the national guard worked to shore up weakened dikes. >> you think about your home. how would you feel if you knew this was coming down and was