Western Sydney's floods have forced Jess Fox to look interstate and overseas as she builds towards a third Olympics.

Fox, already the most successful paddler in the history of the canoe slalom world championships, won a silver medal as an 18-year-old at London 2012 and a bronze medal at Rio 2016.

The 26-year-old's bid for gold in Tokyo took a hit a year ago, when the 2020 Olympics were postponed and she found herself training in a backyard swimming pool as NSW entered a lockdown in response to the COVID-19 pandemic.

Fox was able to return to the Penrith Whitewater Stadium, but recent flooding means that Sydney Olympics venue is now out of action.

Fox, having trained in Tasmania during the previous weekend, is likely to head to an Auckland canoe/kayak slalom course in coming weeks.

"It was really scary seeing the Nepean River that high. I'd never seen it that high," the Penrith local said.

"I paddle on the Nepean often. It was really devastating to see that impact.

"The water quality isn't great (at the Whitewater Stadium). We're just waiting, day by day, to hear what the next week will bring in terms of training.

"It's been hard to make concrete plans, so it's about staying adaptable and taking what comes. Hopefully we'll get to New Zealand.

"It'll be nice to switch up the routine and get to a different course, which resembles Tokyo a little bit more too."

Fox, one of Australia's leading medal hopes, admitted it was hard to get a gauge on where her rivals are at.

"It feels very different to Rio," she said.

"It might be that the Olympics are our first competition against each other in a year.

"Obviously gold is that dream goal of every athlete, but you can't control what your competitors do."

Australia's Chef de Mission Ian Chesterman tipped the trans-Tasman bubble to be a boon for Olympians in several sports, who have been largely starved of high-quality competition.

"New Zealand have got some really strong teams in some of our strong sports ... rowing, hockey, rugby sevens," Chesterman said.

"They will be trying to set up some competitions from now on, as soon as the bubble opens up.

"The sooner we can get some of those things happening, the better."