What percentage of new orleans was flooded during hurricane katrina as a result of storm surges and failed levees?

About 80% of New Orleans was flooded during Hurricane Katrina.

Explanation:

On August 29, 2005, the hurricane, predicted and followed by weather services, hit the coasts of Louisiana in the United States.

On August 30, 2005, one day after Hurricane Katrina, 80% of the city of New Orleans was under water. The flood was caused by two breaches of the seven-meter-high system that protected the city built below sea level, surrounded by the Mississippi to the south and Pontchartrain Lake to the north.

In the evening of Thursday, September 1, 2005, units of the National Guard arrived on the scene to prevent looting, which had become widespread.

The confirmed toll of the hurricane was of 1,836 dead, and an economic damage of $108 billion.

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