The Environment Agency (EA) is celebrating a successful year for its eel passes on the River Great Ouse. It was revealed that over 70,000 eels had made the journey to Cambridgeshire from the Sargasso Sea in the North Atlantic – a journey of over 3,000 miles.

The European Eel is a critically endangered species which makes the journey to East Anglia over the course of 2 years. The eels then spend up to 20 years living in British rivers before heading back to the Sargasso Sea to spawn, the EA said in a news release.

The eels are an important indicator to the environmental health of the sea, rivers and freshwater habitats.

Between March and October 2022, 74,452 eels travelled through the Brownshill staunch eel pass and monitoring station. This is the third highest number recorded at the station since it began recording in 2008 when just 658 eels passed through the station. This year’s bumper number of visitors has been helped by high tides along the Ouse which have provided good conditions for the eels to migrate.

The Environment Agency has been working to ensure that the eels have free passage around Cambridgeshire and Bedfordshire’s rivers. There are over 35 dedicated eel passes on weirs, sluices, pumping stations and locks as well as on other private structures. These passes allow eels to travel up through specially designed brush-like structures. The bristles help the eels to swim safely, and without obstacles.

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