Lake Health Warning 1 October 2019   Potentially toxic blue-green algae (planktonic cyanobacteria) was found in Lake Forsyth/Te Roto o Wairewa. People and animals, particularly dogs, should avoid Lake Forsyth/Te Roto o Wairewa until the health warning has been lifted. https://www.ecan.govt.nz/your-region/your-environment/water/health-warnings/lakes-planktonic-cyanobacteria-warnings/