Torrential rain from Hurricane Isaac caused water to spill over the top of a levee in Plaquemines Parish, La., Wednesday morning. Many homes are underwater and dozens of residents were in need of rescue in the parish about 50 miles southeast of New Orleans.

Parish president Billy Nungesser told reporters:

The devastation of my house is worse than Katrina aand the flooding in Woodlawn is worse than Katrina, so those things tell me that the damage on the east bank is worse than Katrina.

The National Guard has been deployed to help with rescue efforts.

And the situation could worsen later today.

Mandatory evacuations are underway.

An intentional levee breach may be necessary to relieve pressure.

Many are tweeting photos of the devastation.

The Twitterverse is praying for Plaquemines Parish residents and rescue workers.