Tasmanian Irrigation advises that Craigbourne Dam in Tasmania's South East will remain closed over the Christmas period due to the presence of an algal bloom.

TI has continued weekly monitoring of the naturally occurring bloom and tests continue to show blue-green algae cell counts at high alert levels.

The dam remains closed to all recreational activities, including fishing and TI recommends against the consumption of any fish caught from the dam.

The current levels within the dam may present a risk to human health, including skin irritations and gastrointestinal illness.

TI understands that closing the dam over the holiday period may inconvenience some members of the public but this is necessary to protect the community.

TI is continuing to monitor the algal bloom and will re-open the site once results show a return to safe levels.