Warning to dog owners/guardians: treat all rivers as potentially lethal! While we have been able to confirm algae are present at sites that may be listed below, people should keep themselves and their pets safe by assuming that all waterways may have Phormidium present and they should check for obvious signs before swimming or letting dogs off the lead.
(updated 27 May 2009)
No warnings are in place for rivers in the region. High flows in rivers across the region will have removed the toxic algae, Phormidium.
Amongst green algae Within riffles At the river edge Attached to rocks Dried Phormidium In shallow water Toxic alagae on rock