It’s actually a levee, according to Reuters:

A levee broke in northern New Jersey on Tuesday, flooding the towns of Moonachie, Little Ferry and Carlstadt with 4 to 5 feet (1.2 to 1.5 meters) of water in the wake of Hurricane Sandy, officials told Reuters.

“We are in rescue mode,” said Geanne Baratta, chief of the Bergen County Executive. There were no reports of fatalities as of yet, she said.

Levee break Borough of Moonachie Bergen County. http://t.co/Jjz2ggyu — NJSP – State Police (@NJSP) October 30, 2012

reports of a levee break in Bergen County, New Jersey. Folks need to be rescued, including some who are reportedly on their roofs. — Rob Nelson (@TVRobNelson) October 30, 2012

#Moonachie, NJ and Little Ferry in Bergen County residents await rescue as flooding from dam break imperils citizens #Sandy #ITcontinuity — Mercury Continuity (@mercury_cp) October 30, 2012

It’s going to be a long and harrowing day for first responders. Keep them all in your thoughts and prayers.

Update:

Twitter users are sharing pics of the flooding in the areas impacted by the levee break.

On the road this morning checking out Sandy’s damage.I’ll post the stills. #Little Ferry, #New Jersey. twitter.com/pix11Mike/stat… — Mike Gilliam (@pix11Mike) October 30, 2012

Levee broke in Moonachie. My couches be floating. Water came up within 30 min. pic.twitter.com/jxEDttoR — Slumberto (@Slumberto) October 30, 2012

Photo: Flooding in Moonachie, NJ, under several feet of water after a levee broke – Instagram user emannino22 http://t.co/yGvUdCOE — Breaking News Storm (@breakingstorm) October 30, 2012

https://twitter.com/s__kaldas/statuses/263145649195847680

Evacuations are still taking place this morning.