Unlocking the Severn has completed the Diglis fish pass - the biggest deep vertical slot fish pass in England and Wales.
Unlocking the Severn has completed the Diglis fish pass - the biggest deep vertical slot fish pass in England and Wales.
The pass will allow the rare and endangered twaite shad to swim past Worcester on their annual spawning migration for the first time in nearly 180 years, since Victorian Navigation Weirs were built across the UK's longest river.
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