The Times-Picayune (http://bit.ly/RGd3mI) reports that a statement from the museum says it has maintained climate control in the building, but cannot open it to the public to maintain proper conditions during work to assess and fix the damage.
Museum representatives have said that no artworks were damaged by Isaac or the below-ground leaks. No reopening date has been issued.
Seepage into the basement of the century-old building was a major hurdle in its recovery from Hurricane Katrina in 2005.
Information from: The Times-Picayune, http://www.nola.com