The River Nidelva is dammed at the power station’s intake, and this section of the river is the boundary between Grimstad and Arendal

The power station lies along the middle section of the River Mandalsåni in the Mandal drainage basin

The power station, which lies on the River Otra, makes use of the 50.45-metre drop from Gåseflåfjorden to Skaiåevja

Finndøla power station, in Fyresdal Municipality in Telemark, lies on Lake Fyresvatn, which is part of the Arendal drainage basin