Seven state parks in Louisiana that were hit by the most damaging winds and water of Tropical Storm Isaac will remain closed “indefinitely,” says Lt. Gov. Jay Dardenne.

“The parks in the southeast are of great concern,” he said, because they are expected to have significant damage from wind and water. Crews are to assess the damage at the ones they can get into them, he said.

Quoting Dardenne, The Advertiser, Lafayette, La., reported that Grand Isle State Park is under two feet of water, so there’s no way to tell when it might reopen. The one highway leading to Grand Isle is flooded, so crews can’t get there to inspect it.

He said he’s concerned most about Fairview Riverside near Madisonville and Fontainebleau near Mandeville because of reports of high water. Both parks have cabins and other facilities that likely flooded.

“We hope to get some analysis” of the damage within 24 hours, he said Thursday, but he’s afraid “the damage is going to be worse than it was from Katrina. The guys down there say the water is worse than Katrina.”

Other state parks in that region that are closed are Bogue Chitto near Franklinton, Tickfaw near Springfield, St. Bernard in St. Bernard Parish and Bayou Segnette near Westwego Dardenne said he’s also concerned about Chicot State Park near Ville Platte.

The lieutenant governor came to the Governor’s Office of Homeland and Security after checking out the State Library in downtown Baton Rouge.

“There was a little water on the fifth floor” where the Louisiana Collection is housed, he said. “It didn’t look like a major leak and it’s been secured.”

The air conditioning system is on and humidifiers are taking moisture out of the air.

Parks in the northern part of the state and historic areas are fine, Dardenne said, and most should reopen Friday. Museums across the state, including the Presbyter and Cabildo, were not damaged.

The Forts Buhlow and Randolph historic sites in Pineville, the Marksville Historic Site, the Longfellow-Evangeline Historic Site in St. Martinville and the Plaquemine Lock Historic Site are expected to be open today. Rosedown and the Audubon Historic Site near St. Francisville should open Saturday.