The Otra river is the largest river in the Sørlandet region of Norway. It flows from the Setesdalsheiene in Bykle municipality in Aust-Agder in the north down to the municipality of Kristiansand in the south. Sørlandet is the geographical region (landsdel) of the Skagerrak coast of southern Norway. ... Bykle is a municipality in the county of Aust-Agder, Norway. ... County NO-09 Region Sørlandet Administrative centre Arendal County mayor Oddvar Skaiaa Area - Total - Percentage Ranked 14 9,157 km² 2. ... County Vest-Agder Landscape Sørlandet Municipality NO-1001 Administrative centre Kristiansand Mayor (2004) Jan Oddvar Skisland (KrF) Official language form BokmÃ¥l Area - Total - Land - Percentage Ranked 287 277 km² 259 km² 0. ...
The Otra is 245 km long, making it Norway’s eighth longest river. There are two large lakes along the river: Åraksfjorden and Byglandsfjorden.