Weir approach and passage details for twaite shad and sea lamprey at "Unlocking the Severn" project weirs

Yeldham, Mark, Davies, Peter, Britton, Robert, Bolland, Jonathan, Nunn, Andrew, Dodd, Jamie, Crundwell, Charles, Velterop, Randolph and Grzesiok, Chris (2025) Weir approach and passage details for twaite shad and sea lamprey at "Unlocking the Severn" project weirs.

Details of twaite shad and sea lamprey tagged with acoustic transmitters in the River Severn between 2018 - 2023, their migration metrics relating to approach and passage at the weirs where fish easements (fish passes and weir modifications) were completed during the "Unlocking the Severn Project", and the biotic and time-varying environmental variables used in time to event analysis assessing the influences of weir passage.