Crews and machinery are on standby to open Lake Conjola, if it reaches "the trigger level" Shoalhaven City Council says.
"The Lake level is currently sitting at 0.86m," the council said.
"The Lake levels have not yet reached the required planned opening trigger level, however, the weather is being closely watched and crews and machinery are currently on standby, should the trigger level be reached."
The council said that, despite community requests for a managed opening of the lake, state government agencies had refused permission.
"Despite the numerous requests and provision of evidence from council and the community, of the on-ground situation, the answer from government agencies, continues to be that a managed opening cannot occur at this time, given the current level of the lake," the council said.
"Further representations have continued to be made by Council Staff, the GM, the Mayor and Councillors to seek an urgent opening of the lake as soon as possible and will continue to be made until a solution can be provided, to seek an opening of the Lake, for the community."
South Coast MP Shelley Hancock said on facebook that she is "fighting to open Lake Conjola".
"Last week I spoke in Parliament about the urgent need to open Lake Conjola and how the current low level flooding is impacting local residents," she said.
Ms Hancock has been contacted for comment.