Dam removal of the Hunseröd hydroelectric plant, Sweden

Free-flowing waters in the creek of Hunserödsbäcken will benefit naturally occurring species of the Rönne å river system.

Introduction

The current dam presents a definitive barrier to all aquatic species in the Hunserödsbäcken. Since the creek outlet to the main river (Rönne å) is located only about 14 km upstream from the sea, the creek provides a highly valuable habitat for sea-freshwater migrating species such as salmon, sea-run brown trout, European eel (CR), and sea-migrating lamprey (EN). The dam removal is also a prerequisite for the watershed to achieve good ecological status.

At a glance

Project statusLive
Project typeDam removal: demolition
CountrySweden
RiverCreek of Hunserödsbäcken, part of Rönne å river system
Removal dateSummer 2025
Km to be opened9 km
Focal speciesSea trout, salmon
OrganisationSportfiskarna (Swedish Anglers Association)
WebsiteSportfiskarna

Project context and opportunity

The dam removal of Hunseröd in the creek of Hunserödsbäcken is an important step towards free-flowing waters in the whole of the Rönne å river system. Every dam removal in tributaries of the Rönne å River will benefit important species such as salmon, sea trout and sea lamprey (which is almost extinct in Sweden). In Rönne å River, which is part of the LIFE-project LIFE Connects, three larger dam removals will happen hopefully in 2025. Every dam removal in the Rönne å river system will benefit biodiversity, both in the river system and in the sea.

Project aims

The main expected outcome is to open up the Hunserödsbäcken creek to all naturally occurring species and allow the natural creek to re-emerge where it is currently covered by the dam (the waterbody). The species most significantly impacted will be salmon and sea-run brown trout, which will gain access to several kilometres of new creek habitat for spawning and growth.

This area, along with connected ponds and small lakes, will also greatly benefit the European eel, as it will be able to reach these critical growing areas without needing to pass through any hydropower plant when migrating back to the sea.

Environmental quality standards are measured for all rivers and creeks in Sweden to determine their current status and set goals to be achieved within a specific timeframe. Hunserödsbäcken currently has a “poor” status and must achieve a “good” status by 2033. Removing the dam is a necessary step towards reaching this goal.

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