Last summer, the final concrete foundation of the G\u00f6rarp dam, which was a migration barrier for fish species in the River R\u00e5\u00e5n, was removed. Unfortunately, despite low flows, some sediment was washed into River R\u00e5\u00e5n causing turbidity in the river. Fortunately, electrofishing in River R\u00e5\u00e5n 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.<\/p>\n
Electrofishing carried out during the summer in the G\u00f6rarps Dam’s former impoundment area also shows high presence of trout – meaning that the species has quickly chosen to establish itselv in the new stream habitat that has\u00a0 formed after the water level was lowered. Strong-swimming species, such as trout, have previously been able to pass G\u00f6rarp 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 G\u00f6rarp Dam, such as greenling, id, roach and lamprey.<\/p>\n
What remains to be done at G\u00f6rarpsdammen is to carry out habitat restoration in the river channel and in some places facilitate flooding so that the floodplain forest at the former impoundment area can benefit.\u00a0<\/span><\/p>\n