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Finland Removes Last Major Fish Migration Barrier in Hiitolanjoki River System

By Nordics Today News Team

Finland has started removing the Kurunkoski dam, the last major migration barrier for endangered fish in the Hiitolanjoki river system. The restoration project will reopen dozens of kilometers of spawning grounds by year's end. This represents a significant shift toward prioritizing river ecosystem health over small-scale hydropower generation.

Finland Removes Last Major Fish Migration Barrier in Hiitolanjoki River System

Workers have begun dismantling the Kurunkoski hydropower dam in Rautjärvi, Finland this week. This project will restore vital migration routes for several endangered fish species. The dam represents the final complete migration barrier in the Hiitolanjoki river system for many threatened migratory fish.

The removal project aims to reopen dozens of kilometers of spawning grounds. Migratory fish will regain access to critical breeding areas they haven't reached freely for decades. The World Wide Fund for Nature leads this important environmental restoration effort.

Project organizers expect the demolition work to finish by year's end. The timeline allows for complete removal before the next major migration season begins. This careful scheduling ensures minimal disruption to aquatic life.

Finland has increasingly focused on river restoration in recent years. The country recognizes that healthy river ecosystems support biodiversity and sustainable fishing. This project aligns with broader European Union environmental directives protecting aquatic habitats.

The Hiitolanjoki river system flows through southeastern Finland into Russia. It hosts several threatened fish species including the Atlantic salmon and landlocked salmon. These fish require uninterrupted river access to complete their life cycles successfully.

Dam removal represents a significant shift in environmental management philosophy. For decades, communities prioritized hydroelectric power over ecological concerns. Now, the balance is shifting toward preserving natural river systems and their inhabitants.

Local communities support the project despite losing a historical power source. They recognize the long-term benefits of healthy fish populations for tourism and traditional fishing. The restored river will likely attract nature tourists and fishing enthusiasts.

What does this mean for Finland's energy landscape? The country continues transitioning toward more sustainable energy sources. While losing some hydropower capacity, Finland compensates with increased wind and solar generation.

This dam removal sets an important precedent for other Nordic countries. Norway and Sweden face similar challenges with aging dams blocking fish migration. They may follow Finland's lead in prioritizing ecological restoration over maintaining small-scale hydropower.

The project demonstrates practical environmental stewardship. It shows that concrete actions can reverse decades of ecological damage. Other regions struggling with river fragmentation should watch this project's outcomes closely.

Published: November 16, 2025

Tags: Finland dam removal projectendangered fish migration routesHiitolanjoki river restoration