The weir at High Dam is thought to date from the 18th century but there may have been an earlier Medieval structure. The weir created a head of water to supply Bishopton Mill via a long mill leet and aqueduct system.
The project will create a bypass chanel to allow fish to move upstream past the weir structure. The old mill leat will be partially restored in order to allow water to flow through it. This will create a further wetted chanel below the weir to further enhance biodiversity. Volunteers from Ure Salmon Group and the MOD’s Operation Nightingale will carry out the work in October this year.