Sven Åhs is a fisheries conservation worker and works to create favorable conditions for fish in Hudiksvall and Nordanstig municipality.
He has the summer workers Linnea Aspholm and Linus Hansson to help him.
For over 100 years, the water was led from a dam and through a pipe into the hydropower plant.
This prevented the fish from being able to walk from the sea up into the Nianån river.
Now the watercourse has been open for a few years.
- Already the following year there were fry here, then they went up and played.
There are hundreds of fry here now, last year I got fourteen fry in one and the same net, says Sven Åhs.
Requirements for nature reserves
In 2016, Hudiksvall municipality bought the hydropower plant where the Nianån river empties into the sea.
The price for the hydropower plant was SEK 8 million.
The Swedish Environmental Protection Agency was responsible for half of the cost, with the requirement that the municipality turn the area into a nature reserve.
The anglers also contributed SEK 250,000.
The Swedish Maritime Administration contributed SEK 3 million for the demolition of the dam and tunnel that brought water into the hydropower plant.
The reason why the Swedish Maritime Administration granted the grant was because a more open Nianån river was judged to have an effect on the entire Baltic Sea.
Fishing is prohibited on the site today.