Algae spread eases at Henley Lake

Toxic algae, known as cyanobacteria, has been the scourge of Henley Lake and was again detected in the Masterton body of water in late January.

Seasonal toxic algae problems at Masterton's Henley Lake have lessened and health warnings regarding contact with the water have been lifted.

The toxic algae, scientifically known as cyanobacteria, has been the scourge of the lake and some other waterways most summers in recent years and was again detected in Henley Lake in late January this year.

This prompted warnings to people visiting the lake to stay clear of the water.

Dog owners were also told to keep their dogs on leads.

But yesterday Masterton District Council's parks and facilities manager Grant Hathaway said tests carried out over the last two weeks have shown cyanobacteria levels are falling.

"Visitors to Henley Lake are advised Masterton District Council has removed the health warning regarding contact with water at the lake," he said.

Henley Lake is not considered suitable for swimming at any time but people pursuing other water sports such as dragon boating on the lake are now at "minimal risk from exposure to the water".

Mr Hathaway said dogs may now be exercised off leads throughout the reserve area but the prohibition on dog access to the wetlands area which is enforced each year from September 1 to November 30 remains in place.

Council staff monitors cyanobacteria levels at Henley Lake each week during the summer months and publicly notifies any changes in water quality that could represent a health risk.