A warning has been issued after a harmful algae was found in Hartsholme Country Park lake.
Blue-gree algae can be seriously harmful to both humans and animals if contact is made.
Now, the City of Lincoln Council has issued a warning to those visiting the park not to come into contact with the lake water.
It is unknown how long the algae will remain in the lake.
Caroline Bird, Community Services Manager at the City of Lincoln Council, said: “The Environment Agency has confirmed the presence of blue-green algae in the Hartsholme Country Park lake.
“Blue-green algae can be seriously harmful to humans and animals, and we stress the importance of not coming in to contact with the lake water, and being particularly careful when visiting the park with children or pets.
“Algae blooms occur naturally, and this current bloom will naturally dissipate, although we can’t say how long that will take.
“Warning signs were put up as soon as we became aware of the algae, and will remain in place until we are satisfied that it has passed. We have also issued information on social media.
“We hope that this won’t affect visitors’ enjoyment of the park.”