Wivenhoe Dam operators are yet to decide whether they will release drinking water and take the dam below the full mark to avoid future flooding in Brisbane this wet season.

The Bureau of Meteorology had advised Seqwater that Tropical Cyclone Yasi will not bring heavy rain to the southeast.

Wivenhoe Dam overflows during January's flood. Credit:Dean Saffron

Seqwater spokesman Mike Foster suggested there was no rush to decide whether drinking water should be released to bring the dam under 100 per cent capacity, but models of different options should be completed by Wednesday.

Releasing water was just one strategy being considered, but he would not detail other possibilities.