Officials say they will not decide until next month whether to hold part of the Australian Surf Life Saving Championships at Tugun on Queensland's Gold Coast, as planned.
The uncertainty comes after bad weather eroded much of the sand at the popular beach.
The championships were moved to the southern Gold Coast after the drowning of a competitor at Kurrawa last year.
North Kirra Surf Club will host most of the events, while Tugun is the destination for the surf boats.
North Kirra beach has escaped with only minor damage from the wild weather but championships spokesman Ian Hanson says Tugun has been extensively eroded.
"I was down there myself and saw the beach and there's not much of it - it's certainly under review," he said.
"The pounding that the beaches have already received and the forecast of further bad weather, it really does obviously place it under a big question mark."
Mr Hanson says lifesaving officials will decided on the surf boat venue next month.
All beaches are closed today.
The chairwoman of the city council's engineering committee, Daphne McDonald, says there has been no further erosion overnight.
Ms McDonald says council crews will remove debris and re-profile scarped areas between Miami and Main Beach today.