Once in the Songdalen valley, it is called the Songdalselva. Here it receives more water from the right from the Gumpedalselva tributary. The river drops no more than about over the last to the river mouth, and has on this stretch a very meandering run. There is a short waterfall (Søgne waterfall) near the Søgne Landbruksskole. From that waterfall to the sea, the river is called the Søgneelva. The Songdalselva flows into the sea between the villages of Høllen and Åros in Kristiansand municipality.
