Water Quality Update: Extreme levels of blue green algae

Image
Water quality header
Media type
Release
Date of Publication
2 April 2026

The National Capital Authority (NCA) wishes to advise that, until further notice, the following areas of Lake Burley Griffin are closed to primary contact due to Extreme levels of blue green algae. 

Central Basin - CLOSED TO PRIMARY CONTACT

Primary contact recreation includes activities which involve full immersion such as swimming, bathing, novice secondary contact recreation, or activities which pose a greater risk of swallowing water or having the face wet by spray (e.g windsurfing).

These activities are not permitted at sites closed to primary contact.

Persons engaged in secondary contact recreation activities, such as canoeing and rowing, in these areas should be careful to limit any water exposure and should shower immediately after contact with the water.

Other areas of note:

Yarralumla Beach is OPEN, however a MEDIUM BLUE GREEN ALGAE ALERT is in place.

Yarralumla Beach East is CLOSED to Primary Contact recreation due to high levels of blue green algae.

All other areas of Lake Burley Griffin are open.

Pet owners should not allow their animals to swim in or drink lake water in areas where there are algal scums. 

For Lake Burley Griffin water quality information, restrictions, alerts and health warnings visit Water Quality | National Capital Authority  

For more information on the ACT Guidelines for Recreational Water Quality visit http://www.health.act.gov.au/public-information/public-health/recreational-water-quality 

The NCA will continue to monitor lake water quality and provide updates when available.