The National Capital Authority (NCA) has announced the closure of Lake Burley Griffin for primary contact (swimming) due to the presence of blue-green algae.
It said some areas of the Lake had been closed to primary contact since 22 February.
“The analysis of water-quality samples taken on Monday, 19 March confirms that algae levels have remained elevated and are not safe for primary contact recreational activities,” the NCA said.
“All lake users should look for algae warnings signs indicating the current alert level at major water entry points.”
It said the Lake would remain closed to primary contact until algae levels had reduced to safe levels.
“Only experienced lake users can participate in secondary contact recreation activities, such as sailing, canoeing and rowing,” the NCA said.
“There is an increased risk of adverse health effects from water exposure.”
It said if contact occurs, wash the skin as soon as possible with water and soap; symptoms of exposure may include skin irritation, flu-like symptoms, and gastrointestinal illness.
“It is advised to see a healthcare professional if these symptoms occur,” the NCA said.
It said event organisers should ensure that participants were aware of the algae alert level and associated exposure risks, and provide adequate showering facilities for use after events.
“While algae levels are elevated in Central Basin, the Captain Cook Memorial Jet will not be operating, to remove the risk of inhalation of water droplets from the spray,” the NCA said.
