re: Morganza Spillway

Interesting video; It would be interesting to get a before and after pic. So to sink a barge, they essentially position it next to pipes that hold it in place and then pull the plug and watch it go to the floor of the bayou? Im assuming the barge wont be sticking out of the water once sunk. If the water is 30ft deep there and the barge is 15ft, it wont be a total blockage of water flow.