Algae warning to visitors at nature reserve

People have been urged to "take extra care" when visiting Ashby Ville lake in Scunthorpe

Dog walkers and visitors have been warned of a potential outbreak of blue-green algae at a nature reserve.

North Lincolnshire Council urged people to "take extra care" when visiting Ashby Ville lake in Scunthorpe, while it works with the Environment Agency to check the water.

Blue-green algae is a collection of microscopic organisms that are naturally present in lakes and streams which can become harmful.

The council also reminded visitors that open water swimming can be dangerous.

The blue-green algae, technically known as cyanobacteria, can become abundant in warm, shallow, undisturbed, nutrient-rich surface waters that receive a lot of sunlight, leading to floating mats or scums on the water's surface.

Some blue-green algae can produce toxins, some do not.

However, it is not possible to tell if a bloom is toxic simply by looking at it.

Exposure to high levels of any blue-green algae blooms - whether by contact with water blooms, swallowing the water or inhaling airborne droplets - can cause health effects in people and animals.

These can include diarrhoea, nausea or vomiting, skin, eye or throat irritation, allergic reactions or breathing difficulties.

However, the algae can be extremely dangerous to pets, livestock and wildlife.

The council added that swimming in open water is dangerous and could be fatal.

It said: "Ponds and lakes may contain hidden rubbish, sunken buildings or dangerous weeds that can trap bathers who also risk catching waterborne infections.

"At this time of year the shock of entering cold water can also be extremely dangerous," it added.

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