After their season opener at home on Thursday night against Geelong was postponed because of the weather, the Lions have returned to their waterlogged home base on Monday to work out what comes next.
They will head to Sydney early on Wednesday ahead of Saturday's grand final rematch against the Swans.
The NRL's Titans will also relocate to Sydney on Tuesday for Sunday's game against Canterbury.
Gold Coast's Parkwood training base is out of action due to flooding.
The Dolphins, without power at their flooded Redcliffe training base, flew to Newcastle on Monday night to prepare early for their Thursday night match against the Knights.
Brisbane have been able to train outdoors since last Wednesday, when they had an intraclub hitout at their Brighton Homes Arena headquarters. They trained indoors there on Monday.
Lions football boss Danny Daly said the past week had been unprecedented, but was upbeat about being ready for the Swans.
"These things happen unfortunately in life, and you just need to be resilient, be calm about it and work your way through it," he said.
"So, I've got no doubt our preparation will be spot on leading into our game against Sydney.
"We will train somewhere tomorrow, whether it is the Gabba or Brighton Homes Arena, which are both pretty waterlogged at the minute as you can imagine.
"We will head to Sydney on Wednesday then get training in somewhere on Thursday on a dry ground as preparation for the game."
Daly thanked the AFL and sent the Lions' best wishes to everyone affected by Alfred.
"On behalf of the football club I hope everyone in Queensland and New South Wales are safe and well and we are all praying for you," Daly said.
"To make sure everyone is safe and sound that's the first priority for us, the human element of it. Then once that is taken care of, you look at the footy side of it and you find a way to just deal with it and get on with it."
Titans boss Steve Mitchell said water was sitting well above the crossbar on the  team's training field and that the safety of players and staff was paramount.
He said the club's dojo facility used for warm-ups, wrestles and indoor training had also been damaged by the wild conditions.
Meanwhile, Super Rugby team the Queensland Reds were due to land in Brisbane on Monday after a two-week road trip to Perth and Christchurch.
Their Ballymore base has so far avoided flooding and the team is expected to resume training on Wednesday ahead of their Super Rugby Pacific blockbuster at Suncorp Stadium against NSW Waratahs on Saturday.
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