The Fishcon lock was installed together with our partner company KFD at the Schwarzmühl weir in Upper Austria. The Schwarzmühl weir with a height difference of approx. 3.8 m is located in the river Alm, making it the second Fishcon lock in this body of water. 

Description

The implementation takes place in the course of the construction of a 60-kW residual flow hydropower plant at the site. This not only ensures continuity in both directions, but also ensures that all river sections of the Schwarz hydropower plant are supplied with sufficient water. 

In autumn 2023, a video monitoring was carried out at the Fishcon lock Schwarzmühle, which was evaluated by the technical office “Umweltgutachten Petz OG”. The Fishcon lock was rated as fully functional with the best grade according to Woschitz et al. 2003. In addition to the total of 345 fish ascents, 43 fish descents were also documented in the study period of approx. 50 days, despite a poor fish population of around 10 kg/ha in the river.”

Numbers & Facts

Fish region: Trout region
Lead fish: Brown trout 50 cm
Height difference: 3.7 m
Attraction flow: 100 l/s
Assessment: Fully functional according to Austrian regulations
Implementation: End of 2022 / beginning of 2023

Data Sheet Download