When does N.O. turn on the outfall canal pumps?

We've gotten a lot of questions about why the pumps by the lake are not turned on. Katie Moore explains why the city didn't need them before, but will need them this weekend.

NEW ORLEANS -- Several viewers have asked us why the big pumps by Lake Pontchartrain weren't turned on during the Aug. 5 flood or any time the streets have flooded in New Orleans.

Investigative reporter Katie Moore explains that those pumps are only used when storm surge forces the Army Corps. of Engineers to close the flood gates. Those pumps then push the water being pumped into the outfall canals OVER the flood gates and into the lake.

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