Red Alert warning lifted for Toonumbar Dam

Red Alert warning lifted for Toonumbar Dam

24 February 2020

The Red Alert for Toonumbar Dam west of Kyogle has now been lifted. Sampling by WaterNSW dam staff has shown significantly reduced levels of blue-green algae at both sampling points on the dam. It is now at Green Alert with regular monitoring still in place.

As the Red Alert has been lifted there are no longer any restrictions on recreational activities as previously advised. Recreational users are advised to report any scums or other signs of blue-green algae to WaterNSW dam staff. Stock and domestic users downstream are advised to continue to check water extraction areas and report evidence of blue-green algae to WaterNSW or local council.

Although recent significant inflows have resulted in a considerable reduction in blue-green algae levels, they have also introduced high levels of nutrients. Under favourable conditions this could result in rapid growth of blue-green algae.

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.

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

Media Contact – Tony Webber – 0428 613 478

General Enquiries – Hannah Took – 0436 653 394


Thursday 02 December
2,494,850 ML
2,581,850 ML
9,154 ML
1,308 ML
30,186 ML
Thursday 02 December