Barley straw added to Canvey Island Lake in effort to stop deadly algae growth
The town council says the natural method should help stop algae from forming again after fish started dying in their droves
Barley straw has been placed in Canvey Island Lake to try to stop harmful algae from growing, after the organisms were linked to the deaths of dozens of fish.
The lake, off Denham Road, has seen repeated problems with blue-green algae. In 2022, families were told to keep their pets away after dead fish were seen on the surface of the water. Fishing was banned, and many fish were moved to separate ponds where they now live permanently.
In 2023, Canvey Town Council warned of the risk to people and animals. A spokesperson said at the time: “Due to the high levels of blue-green algae present in the lake, the Town Council is warning residents to stay away from the water.”
The council explained that algae occur naturally in lakes, rivers and streams, but can become dangerous during what is known as a “bloom”.
“During a bloom, the water becomes less clear and may look green, blue-green, or greenish brown, and scums can form during calm weather when several bloom forming species rise to the surface,” the spokesperson said.
“Cyanobacteria or ‘blue-green algae’, a type of blooming algae, can produce toxins. These toxins can kill wild animals and pets. They can also harm people, producing rashes after skin contact and illnesses if swallowed.”
Now, the council has started using barley straw in the lake to tackle the issue.
A spokesperson said: “The Town Council has approved the use of barley straw in the lake, which is being installed. This should help to control any potential algae growth during the hotter weather.
“Barley straw helps to naturally inhibit new algae growth formation by releasing compounds as it naturally decomposes and helps the potential environmental issues that are caused by algae growth.”
The lake has also been supported by a water pump and by Essex Fire Service, which has helped pump fresh water into the area.
Earlier this year, there were further periods of hot weather, with experts forecasting more high temperatures over the summer.
In October 2023, a petition to abolish the Town Council received nearly 3,800 signatures. The 15-page petition was titled “Save Canvey Lake”.