River Murray Minister Karlene Maywald made the announcement today.

She also said there was little chance of allocations being increased before the middle of next year because little water was expected to flow into the system over summer.

"While there was a very small improvement of 24 gigalitres in the amount of water available to South Australia (in October), this water must be put aside for critical human needs in 2009-10," the minister said.

"Conditions across the basin are still very dry and storages are low."

Ms Maywald said water allocations to irrigators would continue to be reviewed each month.