Algae alerts

12 APRIL 2023

Blue-green algae Red Alert for Wyangala Dam

This red alert warning applies only to untreated water at the above location and will remain in place until monitoring and test results confirm that the risk is sufficiently diminished. People should avoid consuming untreated water from this waterbody and prevent pets and livestock from drinking this water.
5 APRIL 2023

Blue-green algae Red Alert for Lachlan River at Willandra Weir

WaterNSW has reissued a Red Alert advisory for high levels of potentially toxic blue-green algae for the Lachlan River at Willandra Weir. Latest result of sampling by WNSW has recorded high levels of potentially toxin producing algae. Water users downstream of this location should also apply caution and regularly check water supplies.
3 APRIL 2023

Blue-green algal Red Alert issued for Carcoar Dam

WaterNSW has issued a Red Alert advisory for high levels of potentially toxic blue-green algae (High Alert) for Carcoar Dam.
30 MARCH 2023

Blue-green Algae Red Alert warning for Lachlan River at Willandra Weir has been downgraded

The Red Alert level warning issued by WaterNSW for a high level of potentially toxic blue-green algae has been downgraded for Lachlan River at Willandra Weir.
20 MARCH 2023

Blue-green algae Red Alert warning for Wyangala Dam has been cleared

The red alert warning for blue-green algae at Wyangala Dam (Wall Station 1) has been lifted after two consecutive algal samples showed levels below the red alert threshold. The site is now on an amber alert for blue-green algae.
17 MARCH 2023

Red, blue-green algal warnings lifted for the Darling River at Pooncarie and Tapio

The red alert warnings for blue-green algae for the Darling River at Pooncarie and Tapio were lifted. Both sites are now on amber alert for blue-green algae.
17 MARCH 2023

Blue-green algal red alert issued for Chifley Dam

WaterNSW has issued a Red Alert advisory for high levels of potentially toxic blue-green algae (High Alert) for Chifley Dam on behalf of Bathurst Regional Council. Chifley Dam is located approximately 20km South of Bathurst. This alert is based on visual observation and satellite imagery.
17 MARCH 2023

Blue-green algae Red Alert for Lachlan River at Willandra Weir

WaterNSW has issued a Red Alert advisory for high levels of potentially toxic blue-green algae for the Lachlan River at Willandra Weir. Water users downstream of this location should apply caution and regularly check water supplies.
15 MARCH 2023

Blue-green algal red alert issued for the Murray River at Fort Courage as well as the Darling River at Tapio

WaterNSW has issued a red alert advisory for high levels of potentially toxic blue-green algae for the Murray River at Fort Courage as well as the Darling River at Tapio.
9 MARCH 2023

Blue-green algal red alert issued for the Murray River at Lock 9

WaterNSW has issued a red alert advisory for high levels of potentially toxic blue-green algae for the Murray River at Lock 9.

Related links

Algae Alerts NSW map

WaterNSW acknowledges the traditional custodians of the lands and waters on which we work and pay our respects to all elders past, present and emerging. Learn more