The floods that affected northern England in late December could end up costing Leeds Rhinos over £1million, according to chief executive Gary Hetherington.
Torrential rain saw the River Aire break its banks close to the city centre and inundate the Rhinos' training base in Kirkstall.
Last season's treble winners have been forced to train across the city while the clean-up continues, with all seven training pitches still out of use.
"All the pitches are contaminated so they need to be dug up and reseeded," he told BBC Radio Leeds. "The 3G pitch needs to be replaced. The buildings need to be re-plastered, all the floors need to come up.
"It will be the best part of six months before we can use the grass pitches and gymnasium.
"It is looking like £1m in total. It has caused massive disruption.
"But sport throws up all sorts of challenges and this is another one."
Leeds begin their Super League defence against Warrington Wolves on February 4.