Last summer, the last concrete foundation of the Görarp dam, which was a migration barrier for fish species in the River Råån, disappeared. Unfortunately, despite low flows, some sediment was washed into River Råån and caused turbidity in the river. Fortunately, electrofishing in River Råån conducted this summer shows record high densities of small trout downstream of the dam, which suggests that the turbidity probably had limited impact on the aquatic environment.
Electrofishing carried out during the summer in the Görarps Dam’s former impoundment area also shows a lot of trout – so the trout have quickly chosen to establish themselves in the new stream habitat that has been formed after the lowering. Strong-swimming species, such as trout, have previously been able to get past Görarp Dam thanks to a fish ladder, but weak-swimming species have not been able to migrate past. Therefore, the measure is particularly important for species that were previously unable to swim past the Görarp Dam, such as greenling, id, roach and lamprey.
What remains to be done at Görarpsdammen is to carry out biotope conservation in the river channel and in some places facilitate flooding so that the floodplain forest at the old containment area is favored..
A trout passing the Görarp dam at full speed.