Polder Gardna IX – January 2024 (fot. L. Schiefelbein)

As we informed in previous news, in January 2021 we modernized the drainage system in the Gardna IX and Gardna X polders. As a reminder, the modernization included:
• reconstruction, reconstruction and renovation of culverts (42 pcs.),
• reconstruction, reconstruction and renovation of culverts (49 pieces),
• desilting the bottom of ditches and canals (8,762 meters),
• mowing the bottom of ditches and canals (15,501 meters),
• renovation of the lakeside flood embankment, right lake. Gardno – restoration of the original condition and increase of the embankment crown (450 m),
• demolition of the lakeside dike (400 meters).

View of the fish monitoring chamber (L. Schiefelbein)

In reference to previous information about the fish pass, we would like to present the current results that we managed to obtain thanks to the work of the biometric fish monitoring station.

As a reminder to analyze the phenomenon of fish migration and species identification, a Biometric Fish Monitoring Station was installed at the upper station, in the first chamber. Monitoring the movement of aquatic organisms in the fish pass is based on the HSMR hydroacoustic system. It uses two detection methods: hydroacoustic based on hydroacoustic transducers and optical method based on optical cameras.