Data is valuable for reliable fish stock management and the protection of the salmon and other fish species.
The opening of the Icelandic rivers looks promising. In many of those rivers, such as Elliðaá, Langá, Haffjarðará, Laxá in Leirársveit, Norðurá and Laxá in Kjós we see more salmon this year compared to the beginning of last season.
The increase in fish numbers is up to more than double in some cases, between seasons. It is simple to examine the changes in the stock for those rivers that have had the fish counters for several years. Those information and results give valuable data for salmon research in Iceland.
This is the case in river Langá where the Riverwatcher was installed at the waterfall Sveðjufoss. Since no fish could pass the waterfall, a fish pass was made at the site and a Riverwatcher installed at the top of the fish ladder, counting and measuring automatically every salmon passing through.
When the data from the Riverwatcher is compared to matching fishing reports, one has a good idea about the number of fish spawning in the river each year. In the area above Sveðjufoss, this number can be calculated with more than 98% accuracy.
This data is valuable for reliable fish stock management and the protection of the salmon and other fish species. Responsible fish stock management is important and an ambition that is shared among most fishermen who want the next generation to enjoy the privilege to fish in a wild rivers.
Langá River, Iceland