Alert: Blue Green Algae on River Nidd at Pateley Bridge

Published: 21 September 2022


The Environment Agency has confirmed that Blue Green Algae is present in the River Nidd at Pateley Bridge.

Please be careful and ensure you and your pets stay out of the water. 

Bloom and scum forming blue-green algae can produce toxins. Toxin producing blooms are called Harmful Algal Blooms (HABs). These toxins can kill wild animals, farm livestock and domestic pets. In humans, they can cause rashes after skin contact and illnesses if swallowed. Not all blue-green algae blooms and scums are toxic, but you can’t tell just by looking at them, so it’s best to assume they are.

 We have been assured that as the river flow starts to improve, the algae will wash away and there will be no lasting harm.

For further information about Blue Green Algae, please refer to this leaflet.