MONITORING IN SLUSSEN'S NEW FISHWAY
In mid-2024, a TiVA FC was installed in connection to the newly built fish migration path at Slussen in Stockholm. This long-awaited passage allows fish to freely migrate between Lake Mälaren and Saltsjön at Söderström for the first time in almost 400 years!
A PASSAGE FOR WEAK-SWIMMING FISH
As part of the reconstruction of Slussen, a new fish migration path has been constructed under the northern sluice quay on the side of Gamla Stan. The old Nils Ericson sluice has been converted into a passage to facilitate the free movement of weak-swimming species such as eel, roach, and perch – species that were previously hindered by human infrastructure.
FISH COUNTER WITH CLOUD PLATFORM
The TiVA FC fish counter delivers high-quality results, both in image quality and AI-based species- and length classification. At Slussen, we have installed a larger model of the TiVA FC, with tunnel dimensions of 50x50x140 cm (compared to the standard model’s 30x40x100 cm).
As with all our fish counters and underwater cameras, the TiVA FC at Slussen is connected to our cloud platform fiskdata.se. Here, data is available for both the client and, in this case, for the public. The platform also offers reporting tools for collected data, which are continuously updated.
FISH MIGRATION DISPLAYED FOR THE PUBLIC
To make the Slussen project accessible to the public, the City of Stockholm has chosen to broadcast a live stream via TiVA’s YouTube channel. Shorter streams can also be broadcasted to other platforms, like Facebook, depending on the client’s needs. The City of Stockholm will install an informational screen for “Fish TV” on the crane structure by the fish counter. Passersby in Gamla Stan will be able to learn more about the project, see selected videos, and get updates on the latest migrations.
Visit the Slussen counter at fiskdata.se and read more about the project on the City of Stockholm’s website.
Some of the first passages between the Baltic Sea and Lake Mälaren at Söderström in nearly 400 years!
Installation of the fish counter at Gamla Stan in Slussen.
Curious roach exploring the new TiVA FC.