Dam Lock Weakened in Louisiana

    SLIDELL, LA - AUGUST 30: Residents gather in flood waters from Hurricane Isaac’s storm surge on the north shore of Lake Pontchartrain on August 30, 2012 in Slidell, Louisiana. The large Category 1 hurricane had slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. The weather system has now been downgraded to a tropical storm but is still producing heavy rains and flooding as it moves north.  (Photo by Mario Tama/Getty Images)

    Mario Tama / Getty Images

    About 1,200 homes near Lake Pontchartrain in Louisiana were evacuated Saturday as worries mounted over the possible failure of a canal lock that could flood neighborhoods. Emergency officials tried to take some of the pressure off the lock Saturday night, but people were kept from their homes, and a flash-flood warning remained in effect. According to the National Weather Service, a wall of water resulting from the failure of the first of two canal locks would be 11 feet high. The parish’s website said Saturday that the failure of the second lock was “imminent.”

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