Due to the very limited space on the bank side with the main flow, it was decided to install the fish lock orographically to the right of the power house above the existing bottom outlet. The Fishcon lock has been in operation since the beginning of 2023 and can be operated with water volumes adapted to the migration time.
A video camera installed in the upstream area has already been able to document the first fish migrations of different species in both directions. In autumn 2023 and spring 2024 a fish trap monitoring was carried out by the technical office “Umweltgutachten Petz OG”. In just over 100 days, around 1,560 fish from 19 different species ascended. By comparing the fish ascents with the underwater fish population, the Fishcon lock was assessed as functional according to the Austrian guidelines.
