learn

Phormidium - River cyanobacteria warnings

HEALTH WARNING UPDATE ISSUED BY CDHB: 
River warnings are now in place for potentially toxic benthic algae (cyanobacteria) in the:

  • Selwyn River/Waikirikiri from Whitecliffs Domain to past Glentunnel Camping Ground 
  • Twizel River at picnic area (upstream of SH8)

Mats are detaching and have been observed accumulating along the river edges.

There are also other access points along these rivers that may have cyanobacteria present.  People are advised to treat every low flowing river cautiously, check for the presence of cyanobacteria and avoid contact.

For more information on what potentially toxic cyanobacteria is and what to look out for, visit: https://ecan.govt.nz/…/your-e…/water/cyanobacteria-warnings/ and read our fact sheet.