Blue green algae Red Alert warning lifted – Neimur River

Blue green algae Red Alert warning lifted – Neimur River

06 May 2021

The high-level algal warning (Red Alert) for the Neimur River at Barham has been cleared. Monitoring results show that algal concentrations have declined.

Blue-green algae occur naturally and can reproduce quickly in favourable conditions where there is still or slow-flowing water, abundant sunlight and sufficient levels of nutrients.

Blue-green algae usually appear as green paint-like scums on the water, near the edges, or as greenish clumps throughout the water. It makes the water appear dirty, green or discoloured and generally has a strong musty or earthy odour.

People who believe they may have been affected by blue-green algae are advised to seek medical advice.

Updates about blue-green algae blooms and red level warning areas can be obtained by calling 1800 999 457 or visiting –

Media Contact – Angela Davies 0467 947 426

General inquiries – Elizabeth Symes 0439 199 077


Monday 18 October
2,426,169 ML
2,581,850 ML
9,030 ML
1,290 ML
3,065 ML
Monday 18 October