Red Alert warning for blue-green algae lifted for the Lachlan River at Corrong

Red Alert warning for blue-green algae lifted for the Lachlan River at Corrong

14 November 2019

The Red Alert warning at Corrong in the Lachlan River has been lifted following two consecutive results below red alert levels.

As the Red Alert has been lifted there are no longer any restrictions on recreational activities and water sourced from the Lachlan River at Corrong is suitable for recreational as well as stock and domestic uses.

As algal numbers can change dramatically with changes in conditions, water uses should avoid water which is discoloured or gives off an earthy or musty odour.

Water users should use personal discretion at all times before entering a water body and be aware that the algal situation can change quickly.

WaterNSW will continue routine water quality monitoring and advise of any change as new results are received.

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.

Updates and information about blue-green algae blooms and Red Alert warning areas can be obtained by calling 1800 999 457 or visiting our algae webpage.

Media Contact – Tony Webber – 02 6841 2006

General Enquiries – Gerhard Schulz –


Saturday 27 November
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Saturday 27 November