As Memphis residents brace for record floods, down river, in New Orleans, officials are taking steps to get ready for the surging Mississippi River, opening a spillway that might spare the Big Easy, but would flood several parishes.
We look at how decisions are made to open spillways and control water, with John Barry, who lives in New Orleans. He's author of "Rising Tide: The Great 1927 Mississippi Flood and How It Changed America."
- Wall Street Journal: Battling nature on the river
This segment aired on May 9, 2011.