If you're itching to play the slots at the Rivers Casino on the North Shore, you're going to have to wait a little bit longer.

The casino is pushing back its grand opening four days, from Aug. 5 to Aug. 9, in part because 45 slot machines were damaged by water during last week's storms.

Ed Fasulo, the casino's president and chief operating officer, said the damage occurred after heavy rains caused storm drains to back up on the North Side and left several inches of water in an area where slot machines were being stored.

Water got into the machines' electronics, causing irreparable damage, Mr. Fasulo said. He estimated losses at "somewhere in the $600,000 range."

Another 30 machines that were damaged in their transport to the casino also were being held in the storage area. They suffered some "slight water damage" and are being sent back to the manufacturer to be repaired, Mr. Fasulo said.

He said officials had been considering a delay in the grand opening of the casino even before the slot machine damage occurred, adding that the damage itself was not the impetus for the request.

"We were likely going to ask for the additional four days anyway, just to ensure that we had enough time, that we weren't putting ourselves under any undue stress to meet perhaps an unrealistic deadline," he said.

Kevin O'Toole, executive director of the state Gaming Control Board, granted the casino's request for the delay yesterday.

With the decision, the casino also will move back test days originally scheduled for Aug. 1 and Aug. 3 to Aug. 5 and Aug. 7.

Mr. Fasulo said an outdoor amphitheater and the riverfront promenade that will be part of the North Shore bike and pedestrian trail will open with the casino on Aug. 9.

Officials yesterday unveiled logos and color schemes for the casino's restaurants and bars -- Andrew's Steak and Seafood, Ciao, the Grand View Buffet, the West End Cafe, the Drum Bar, Levels, the Spiral Bar, Wheelhouse, and Club 446.

All will open with the casino except for Wheelhouse, with a planned opening in early October. All will be available to the public except Club 446, a private lounge for high rollers.

"You have to play your way into that club," Mr. Fasulo said.