13 October 2025
A birds-eye view at Acorn Bank
This wonderful footage shows what the newly-completed boulder cascade looks like from the air on Crowdundle Beck, at Acorn Bank.
Carefully constructed, this series of small pools and cascades was built to replace two weirs which were designed to raise the water level to supply the historic watermill. The main weir had suffered repeated storm damage and was at risk of collapse. It also posed a barrier to migratory fish, preventing them from reaching spawning grounds upstream.
The new cascades will support a wide range of river species by offering a variety of freshwater habitats, from faster flowing cascades to shallows and pools. And by gradually rising along its 45m length, it allows migratory fish to pass through, while also maintaining the previous water level at the site of the old weir to allow the mill leat to operate as normal.
This project was funded by the Government's Species Survival Fund. The fund was developed by Defra and its Arm's-Length Bodies. It is being delivered by The National Lottery Heritage Fund in partnership with Natural England and the Environment Agency.
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