Algal blooms at Otautu Bay on Lake Rotoehu. Photo/Supplied
Algal blooms at Otautu Bay on Lake Rotoehu. Photo/Supplied
A health warning has been issued for Otautu Bay on Lake Rotoehu because of the presence of algal blooms likely caused by blue-green algae.
Sampling has been undertaken to confirm if the blooms are being caused by the potentially toxic blue-green algae.
"The health warning means that peopleshould avoid any activity which results in significant contact with the lake water in Otautu Bay," medical officer of health Dr Neil de Wet said.
Contact with water affected by blooms of blue-green algae can cause asthma and hayfever attacks in some individuals.
Contact with the blue-green algae can also cause skin rashes, stomach upsets, and in some cases neurological effects such as tingling around the mouth, headaches, breathing difficulties and visual problems.
Signs will be put up at Otautu Bay advising potential lake users about the algal bloom.
Other parts of Lake Rotoehu do not appear to be significantly affected at this stage.
However, changes in wind direction and lake conditions can rapidly change where blooms occur so it is always best to check the water before any contact with it.
